4216UsingDeclaration(""" 4327UsingDeclaration(""" 4446UsingDeclaration(""" 4516UsingDeclaration(""" 4586UsingDeclaration(""" 4672UsingDeclaration(""" 4775UsingDeclaration(""" 4884UsingDeclaration(""" 4993UsingDeclaration(""" 5070UsingDeclaration(""" 5166UsingDeclaration(""" 5282UsingDeclaration(""" 5377UsingDeclaration(""" 5454UsingDeclaration(""" 5540UsingDeclaration(""" 5636UsingDeclaration(""" 5729UsingDeclaration(""" 5824UsingDeclaration(""" 5920UsingDeclaration(""" 6016UsingDeclaration(""" 6176UsingDeclaration($$""" 6238UsingDeclaration($$""" 6345UsingDeclaration($$""" 6440UsingDeclaration($$""" 6535UsingDeclaration($$""" 6606UsingDeclaration($$""" 6674UsingDeclaration($$"""

24UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(langVersion)); 71UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(langVersion)); 142UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(langVersion), 244UsingDeclaration(source, TestOptions.Regular11); 276UsingDeclaration(source, TestOptions.Regular11, 498UsingDeclaration(source, TestOptions.Regular11, 547UsingDeclaration(source, TestOptions.Regular11, 598UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(langVersion), 683UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(langVersion)); 746UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(langVersion), 800UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(langVersion)); 840UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(langVersion), 1304UsingDeclaration(source, TestOptions.Regular11, 1364UsingDeclaration(source, TestOptions.Regular11);

773UsingDeclaration("""Func<string, string> func1 = x!! => x + "1";""", options: TestOptions.RegularPreview, 829UsingDeclaration("Func<int, int, bool> func1 = (x!!, y) => x == y;", options: TestOptions.RegularPreview, 906UsingDeclaration("Func<int, int> func1 = (x!!) => x;", options: TestOptions.RegularPreview, 967UsingDeclaration("Func<int, int> func1 = x!!=>x;", options: TestOptions.RegularPreview, 1035UsingDeclaration("Func<int, int> func1 = (int x!!) => x;", options: TestOptions.RegularPreview, 1094UsingDeclaration("Func<int, int, int> func1 = (int x!!, int y) => x;", options: TestOptions.RegularPreview, 1169UsingDeclaration("Func<int, int, int> func1 = (int x!!, int y!!) => x;", options: TestOptions.RegularPreview, 1244UsingDeclaration("Func<int> func1 = (!!) => 42;", options: TestOptions.RegularPreview, 1303UsingDeclaration("Func<int, int> func1 = (_!!) => 42;", options: TestOptions.RegularPreview, 1364UsingDeclaration("Func<string, string> func0 = x!=> x;", options: TestOptions.RegularPreview, 1428UsingDeclaration("Func<string, string> func1 = x !=> x;", options: TestOptions.RegularPreview, 1492UsingDeclaration("Func<string, string> func2 = x != > x;", options: TestOptions.RegularPreview, 1556UsingDeclaration("Func<string, string> func3 = x! => x;", options: TestOptions.RegularPreview, 1606UsingDeclaration("Func<string, string> func4 = x ! => x;", options: TestOptions.RegularPreview, 1656UsingDeclaration("Func<string, string> func5 = x !!=> x;", options: TestOptions.RegularPreview, 1724UsingDeclaration("Func<string, string> func6 = x !!= > x;", options: TestOptions.RegularPreview, 1792UsingDeclaration("Func<string, string> func7 = x!! => x;", options: TestOptions.RegularPreview, 1848UsingDeclaration("Func<string, string> func8 = x! !=> x;", options: TestOptions.RegularPreview, 1916UsingDeclaration("Func<string, string> func9 = x! ! => x;", options: TestOptions.RegularPreview, 1972UsingDeclaration("Func<string[], string> func0 = x[] => x;", options: TestOptions.RegularPreview, 2049UsingDeclaration("Func<string[], string> func0 = (x[]) => x;", options: TestOptions.RegularPreview, 2137UsingDeclaration("Func<string[], string> func0 = (string x[]) => x;", options: TestOptions.RegularPreview, 2207UsingDeclaration("Func<string, string> func0 = x = null => x;", options: TestOptions.RegularPreview, 2262UsingDeclaration("var f = int x = 3 => x;", 4326UsingDeclaration("Func<string, string> func0 = x!! = null => x;", options: TestOptions.RegularPreview, 4389UsingDeclaration("Func<string, string> func0 = (x!! = null) => x;", options: TestOptions.RegularPreview, 4458UsingDeclaration("Func<string, string> func0 = (y, x!! = null) => x;", options: TestOptions.RegularPreview, 4538UsingDeclaration("Func<string, string> func0 = (string x!! = null) => x;", options: TestOptions.RegularPreview, 4597UsingDeclaration("Func<string, string> func0 = (string y, string x!! = null) => x;", options: TestOptions.RegularPreview, 4752UsingDeclaration("Func<string, string> func0 = x! ! => x;", options: TestOptions.RegularPreview, 4808UsingDeclaration("Func<string, string> func0 = (x! !) => x;", options: TestOptions.RegularPreview, 4869UsingDeclaration("Func<string, string> func0 = (y, x! !) => x;", options: TestOptions.RegularPreview, 4941UsingDeclaration("Func<string, string> func0 = (string x! !) => x;", options: TestOptions.RegularPreview, 5000UsingDeclaration("Func<string, string> func0 = (string y, string x! !) => x;", options: TestOptions.RegularPreview,

5059UsingDeclaration(source, TestOptions.Regular9); 5272UsingDeclaration(source, parseOptions);

1736UsingDeclaration(text, options: TestOptions.Regular7_3); 1739UsingDeclaration(text, options: TestOptions.Regular8); 1742UsingDeclaration(text, options: TestOptions.Regular9); 1833UsingDeclaration(text, options: TestOptions.Regular7_3); 1836UsingDeclaration(text, options: TestOptions.Regular8); 1839UsingDeclaration(text, options: TestOptions.Regular9); 1973UsingDeclaration(text, options: TestOptions.Regular7_3); 1976UsingDeclaration(text, options: TestOptions.Regular8); 1979UsingDeclaration(text, options: TestOptions.Regular9); 2069UsingDeclaration(text, options: TestOptions.Regular9); 2140UsingDeclaration(text, options: TestOptions.Regular9); 2212UsingDeclaration(text, options: TestOptions.Regular9); 2285UsingDeclaration(text, options: TestOptions.Regular9); 2412UsingDeclaration(text, options: TestOptions.Regular7_3, 2427UsingDeclaration(text, options: TestOptions.Regular8, 2442UsingDeclaration(text, options: TestOptions.Regular9,

36UsingDeclaration("private", options: null, 155UsingDeclaration("class C { }", options: options); 173UsingDeclaration("void M() { }", options: options); 202UsingDeclaration("static int F1 = a, F2 = b;", options: options); 250UsingDeclaration("public ThisClassName(int x) : base(x) { }", options: options); 301UsingDeclaration("public ~ThisClassName() { }", options: options); 328UsingDeclaration("public implicit operator long(int x) => x;", options: options); 371UsingDeclaration("public int operator +(int x, int y) => x + y;", options: options); 430UsingDeclaration("C operator >>>(C x, C y) => x;", options: options); 481UsingDeclaration("C operator > >>(C x, C y) => x;", options: options, 564UsingDeclaration("C operator >> >(C x, C y) => x;", options: options, 647UsingDeclaration("C operator >>>=(C x, C y) => x;", options: options, 750UsingDeclaration("async Task<SomeNamespace.SomeType Method();", options: options, 798UsingDeclaration("public Task<SomeNamespace.SomeType Method();", options: options, 846UsingDeclaration("async Task<SomeNamespace. Method();", options: options, 889UsingDeclaration("public Task<SomeNamespace. Method();", options: options, 932UsingDeclaration("async Task<SomeNamespace.> Method();", options: options, 979UsingDeclaration("public Task<SomeNamespace.> Method();", options: options, 1026UsingDeclaration("string Property { get; init; }", options: options); 1060UsingDeclaration("string Property { init set; }", options: options, 1108UsingDeclaration("string Property { init; set; }", options: options); 1142UsingDeclaration("string Property { set; init; }", options: options); 1174UsingDeclaration("required string Prop { get; }", options: parseOptions); 1201UsingDeclaration("required Prop { get; }", options: parseOptions); 1226UsingDeclaration("required Prop { get; }", options: RequiredMembersOptions, 1257UsingDeclaration("required required { get; }", options: parseOptions); 1282UsingDeclaration("required required { get; }", options: RequiredMembersOptions, 1316UsingDeclaration("required required Prop { get; }", options: RequiredMembersOptions, 1347UsingDeclaration("required Type required { get; }", options: RequiredMembersOptions); 1374UsingDeclaration("required string Field;", options: parseOptions); 1398UsingDeclaration("required Field;", options: parseOptions); 1420UsingDeclaration("required Field;", options: RequiredMembersOptions, 1443UsingDeclaration("required required;", options: parseOptions); 1465UsingDeclaration("required required;", options: RequiredMembersOptions, 1486UsingDeclaration("required string M() {}", options: parseOptions); 1513UsingDeclaration("required M() {}", options: parseOptions); 1538UsingDeclaration("required M() {}", options: RequiredMembersOptions); 1562UsingDeclaration("static required C operator+(C c1, C c2) {}", options: parseOptions); 1609UsingDeclaration("static required implicit operator C(S s) {}", options: parseOptions); 1668UsingDeclaration(text, options: parseOptions, 1715UsingDeclaration("required string Prop { get;", options: parseOptions, 1746UsingDeclaration("required string Prop {", options: parseOptions, 1772UsingDeclaration("required string Prop", options: parseOptions, 1800UsingDeclaration("required string", options: parseOptions, 1820UsingDeclaration("required C", options: parseOptions, 1840UsingDeclaration("required", options: parseOptions, 1858UsingDeclaration("required", options: RequiredMembersOptions, 2354UsingDeclaration(text, options: options.WithLanguageVersion(version)); 2496UsingDeclaration(text, options: options.WithLanguageVersion(version), errors); 2620UsingDeclaration(text, options: options.WithLanguageVersion(version), errors); 2726UsingDeclaration(text, options: options.WithLanguageVersion(version), errors); 2832UsingDeclaration(text, options: options.WithLanguageVersion(version), errors); 2884UsingDeclaration("public int N::I::operator +(int x, int y) => x + y;", options: options.WithLanguageVersion(LanguageVersion.Preview), 2964UsingDeclaration("public int I::operator +(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 3019UsingDeclaration("public int I.operator +(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview)); 3070UsingDeclaration("public int I<T>.operator +(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview)); 3130UsingDeclaration("public int N1::N2::I.operator +(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 4121UsingDeclaration("public int I..operator +(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 4183UsingDeclaration("public int I . . operator +(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 4274UsingDeclaration(text, options: options.WithLanguageVersion(version)); 4408UsingDeclaration(text, options: options.WithLanguageVersion(version), errors); 4525UsingDeclaration(text, options: options.WithLanguageVersion(version), errors); 4624UsingDeclaration(text, options: options.WithLanguageVersion(version), errors); 4723UsingDeclaration(text, options: options.WithLanguageVersion(version), errors); 4774UsingDeclaration("int N::I::operator +(int x, int y) => x + y;", options: options.WithLanguageVersion(LanguageVersion.Preview), 4853UsingDeclaration("int I::operator +(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 4907UsingDeclaration("int I.operator +(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview)); 4957UsingDeclaration("int I<T>.operator +(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview)); 5016UsingDeclaration("int N1::N2::I.operator +(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 5966UsingDeclaration("int I..operator +(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 6027UsingDeclaration("int I . . operator +(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 6089UsingDeclaration("int N.I..operator +(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 6166UsingDeclaration("N.I.operator +(int x) => x;", options: options.WithLanguageVersion(version), errors); 6236UsingDeclaration("N.I. int(int x) => x;", options: options.WithLanguageVersion(version), errors); 6299UsingDeclaration(text, options: options.WithLanguageVersion(version)); 6399UsingDeclaration(text, options: options.WithLanguageVersion(version), errors); 6466UsingDeclaration("operator int(int x) => x;", options: options.WithLanguageVersion(version), errors); 6550UsingDeclaration(text, options: options.WithLanguageVersion(version), errors); 6650UsingDeclaration(text, options: options.WithLanguageVersion(version), errors); 6701UsingDeclaration("implicit N::I::operator int(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 6763UsingDeclaration("explicit I::operator int(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 6817UsingDeclaration("implicit I.operator int(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview)); 6867UsingDeclaration("explicit I<T>.operator int(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview)); 6926UsingDeclaration("implicit N1::N2::I.operator int(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 7819UsingDeclaration("explicit I..operator int(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 7880UsingDeclaration("implicit I . . operator int(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 7942UsingDeclaration("explicit I T(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 7999UsingDeclaration("explicit I.T(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 8053UsingDeclaration("explicit I.operator (int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 8107UsingDeclaration("explicit I.operator (int x) { return x; }", options: options.WithLanguageVersion(LanguageVersion.Preview), 8166UsingDeclaration("explicit I.operator (int x);", options: options.WithLanguageVersion(LanguageVersion.Preview), 8212UsingDeclaration("explicit I.T1 T2(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 8277UsingDeclaration("explicit I.operator (int x)", options: options.WithLanguageVersion(LanguageVersion.Preview), 8326UsingDeclaration("explicit I.operator (int x, );", options: options.WithLanguageVersion(LanguageVersion.Preview), 8387UsingDeclaration("explicit I.operator (int x, int y);", options: options.WithLanguageVersion(LanguageVersion.Preview), 8446UsingDeclaration("explicit I.operator var(x);", options: options.WithLanguageVersion(LanguageVersion.Preview), 8492UsingDeclaration("explicit I.operator (int x int y);", options: options.WithLanguageVersion(LanguageVersion.Preview), 8550UsingDeclaration("explicit N.I..operator int(int x) => x;", options: options.WithLanguageVersion(LanguageVersion.Preview), 8710UsingDeclaration("N1..N2 M(int x) => x;", options: TestOptions.Regular, 8768UsingDeclaration("int N1..M(int x) => x;", options: TestOptions.Regular, 8826UsingDeclaration("int N1.N2..M(int x) => x;", options: TestOptions.Regular, 8895UsingDeclaration("int N::I::M1() => 0;", options: options, 8949UsingDeclaration("int N1::N2::I.M1() => 0;", options: options, 9011UsingDeclaration("int N1::N2.I::M1() => 0;", options: options, 9073UsingDeclaration("int I::M1() => 0;", options: options, 9119UsingDeclaration("int N1::I.M1() => 0;", options: options); 9720UsingDeclaration("C I.operator checked " + op + "(C x) => x;", options: TestOptions.RegularPreview); 9851UsingDeclaration("C I.operator checked " + op + "(C x, C y) => x;", options: TestOptions.RegularPreview); 9952UsingDeclaration(op + " I.operator checked D(C x) => x;", options: TestOptions.RegularPreview); 10067UsingDeclaration("C I.operator unchecked " + op + "(C x, C y) => x;", options: TestOptions.RegularPreview, 12427UsingDeclaration("C operator " + op + "(C x) => x;", options); 12480UsingDeclaration("C operator checked " + op + "(C x) => x;", options); 12534UsingDeclaration("C I.operator " + op + "(C x) => x;", options); 12595UsingDeclaration("C I.operator checked " + op + "(C x) => x;", options); 12646UsingDeclaration("C operator > >=(C x) => x;", options, 12731UsingDeclaration("C operator >> =(C x) => x;", options, 12816UsingDeclaration("C operator > > =(C x) => x;", options, 12901UsingDeclaration("C operator > >>=(C x) => x;", options, 12986UsingDeclaration("C operator > > >=(C x) => x;", options, 13071UsingDeclaration("C operator > > > =(C x) => x;", options, 13156UsingDeclaration("C operator >> >=(C x) => x;", options, 13241UsingDeclaration("C operator >> > =(C x) => x;", options, 13326UsingDeclaration("C operator >>> =(C x) => x;", options, 13420UsingDeclaration("C operator " + op + " =(C x) => x;", options, 13516UsingDeclaration("C operator " + op + "(C x1, C x2) => x;", options, 13582UsingDeclaration("C operator " + op + "(C x1, C x2, C x3) => x;", options, 13657UsingDeclaration("C operator " + op + "() => x;", options, 13706UsingDeclaration("C operator unchecked " + op + "(C x) => x;", options, 13763UsingDeclaration("partial C operator " + op + "(C x) => x;", options, 13818UsingDeclaration("partial void operator " + op + "(C x) {}", options, 13845UsingDeclaration("partial C operator " + op + "() => x;", options, 13892UsingDeclaration("partial void operator " + op + "() {}", options, 13931UsingDeclaration(source, options, 14190UsingDeclaration(source, options, 14280UsingDeclaration(source, options, 14355UsingDeclaration(source, options, 14438UsingDeclaration(source, options, 14521UsingDeclaration(source, options, 14608UsingDeclaration(source, options, 14692UsingDeclaration(source, options, 14771UsingDeclaration(source, options, 14850UsingDeclaration(source, options, 14937UsingDeclaration(source, options, 15024UsingDeclaration(source, options, 15115UsingDeclaration(source, options, 15226UsingDeclaration(source, options, 15300UsingDeclaration(source, options, 15374UsingDeclaration(source, options, 15456UsingDeclaration(source, options, 15538UsingDeclaration(source, options, 15617UsingDeclaration(source, options, 15703UsingDeclaration(source, options, 15786UsingDeclaration(source, options, 15880UsingDeclaration(source, options, 15971UsingDeclaration(source, options, 16057UsingDeclaration(source, options, 16140UsingDeclaration(source, options, 16215UsingDeclaration(source, options, 16290UsingDeclaration(source, options, 16373UsingDeclaration(source, options, 16458UsingDeclaration(source, options, 16589UsingDeclaration(source, options, 16721UsingDeclaration(source, options, 16779UsingDeclaration(source, options, 16837UsingDeclaration(source, options, 16895UsingDeclaration(source, options, 16953UsingDeclaration(source, options, 17032UsingDeclaration(source, options, 17111UsingDeclaration(source, options, 17194UsingDeclaration(source, options, 17281UsingDeclaration(source, options, 17375UsingDeclaration(source, options, 17456UsingDeclaration(source, options, 17550UsingDeclaration(source, options, 17664UsingDeclaration(source, options, 17817UsingDeclaration(source, options, 17987UsingDeclaration(source, options, 18096UsingDeclaration(source, options, 18225UsingDeclaration(source, options, 18406UsingDeclaration(source, options, 18601UsingDeclaration(source, options, 18671UsingDeclaration(source, options, 18735UsingDeclaration(source, options, 18792UsingDeclaration(source, options, 18865UsingDeclaration(source, options, 19148UsingDeclaration(source, options, 19211UsingDeclaration(source, options, 19285UsingDeclaration(source, options, 19365UsingDeclaration(source, options, 19417UsingDeclaration(source, options, 19491UsingDeclaration(source, options, 19580UsingDeclaration(source, options, 19984UsingDeclaration(source, options, 20033UsingDeclaration(source, options, 20099UsingDeclaration(source, options, 20219UsingDeclaration(source, options, 20298UsingDeclaration(source, options, 20394UsingDeclaration(source, options, 20489UsingDeclaration(source, options, 20570UsingDeclaration(source, options, 20652UsingDeclaration(source, options, 20724UsingDeclaration(source, options,

99UsingDeclaration(""" 127UsingDeclaration(""" 160UsingDeclaration(""" 196UsingDeclaration(""" 237UsingDeclaration(""" 286UsingDeclaration(""" 322UsingDeclaration(""" 352UsingDeclaration(""" 381UsingDeclaration(""" 410UsingDeclaration(""" 442UsingDeclaration(""" 477UsingDeclaration(""" 521UsingDeclaration(""" 560UsingDeclaration(""" 599UsingDeclaration(""" 635UsingDeclaration(""" 805UsingDeclaration(""" 831UsingDeclaration(""" 860UsingDeclaration(""" 894UsingDeclaration(""" 920UsingDeclaration(""" 941UsingDeclaration(""" 963UsingDeclaration(""" 988UsingDeclaration(""" 1011UsingDeclaration(""" 1034UsingDeclaration(""" 1060UsingDeclaration(""" 1085UsingDeclaration("""

24UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(languageVersion)); 61UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(languageVersion)); 99UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(languageVersion), 135UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(languageVersion), 172UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(languageVersion)); 230UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(languageVersion)); 292UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(languageVersion), 352UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(languageVersion), 405UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(languageVersion)); 467UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(languageVersion)); 550UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(languageVersion), 653UsingDeclaration(source, TestOptions.Regular.WithLanguageVersion(languageVersion));

495UsingDeclaration(source, TestOptions.Regular11); 498UsingDeclaration(source, TestOptions.Regular12); 538UsingDeclaration(source, TestOptions.Regular11); 541UsingDeclaration(source, TestOptions.Regular12); 582UsingDeclaration(source, TestOptions.Regular11); 585UsingDeclaration(source, TestOptions.Regular12); 625UsingDeclaration(source, TestOptions.Regular11); 628UsingDeclaration(source, TestOptions.Regular12); 669UsingDeclaration(source, TestOptions.Regular11); 672UsingDeclaration(source, TestOptions.Regular12); 713UsingDeclaration(source, TestOptions.Regular11); 716UsingDeclaration(source, TestOptions.Regular12); 758UsingDeclaration(source, TestOptions.Regular11); 761UsingDeclaration(source, TestOptions.Regular12); 802UsingDeclaration(source, TestOptions.Regular11); 805UsingDeclaration(source, TestOptions.Regular12); 846UsingDeclaration(source, TestOptions.Regular11); 849UsingDeclaration(source, TestOptions.Regular12); 890UsingDeclaration(source, TestOptions.Regular11); 893UsingDeclaration(source, TestOptions.Regular12); 944UsingDeclaration(source, TestOptions.Regular11, expectedDiagnostics); 947UsingDeclaration(source, TestOptions.Regular12, expectedDiagnostics); 950UsingDeclaration(source, TestOptions.RegularPreview, expectedDiagnostics); 1006UsingDeclaration(source, TestOptions.Regular11, expectedDiagnostics); 1009UsingDeclaration(source, TestOptions.Regular12, expectedDiagnostics); 1012UsingDeclaration(source, TestOptions.RegularPreview, expectedDiagnostics); 1068UsingDeclaration(source, TestOptions.Regular11, expectedDiagnostics); 1071UsingDeclaration(source, TestOptions.Regular12, expectedDiagnostics); 1074UsingDeclaration(source, TestOptions.RegularPreview, expectedDiagnostics); 1129UsingDeclaration(source, TestOptions.Regular11, expectedDiagnostics); 1132UsingDeclaration(source, TestOptions.Regular12, expectedDiagnostics); 1135UsingDeclaration(source, TestOptions.RegularPreview, expectedDiagnostics); 1181UsingDeclaration(source, TestOptions.Regular11); 1184UsingDeclaration(source, TestOptions.Regular12); 1224UsingDeclaration(source, TestOptions.Regular11); 1227UsingDeclaration(source, TestOptions.Regular12); 1267UsingDeclaration(source, TestOptions.Regular11); 1270UsingDeclaration(source, TestOptions.Regular12); 1273UsingDeclaration(source, TestOptions.Regular9);

5815UsingDeclaration(""" 5909UsingDeclaration("""