28_underlying = underlying;

31internal override CSharp.Symbol UnderlyingSymbol => _underlying; 32internal Symbols.MethodSymbol UnderlyingMethodSymbol => _underlying; 38switch (_underlying.MethodKind) 75throw ExceptionUtilities.UnexpectedValue(_underlying.MethodKind); 86Interlocked.CompareExchange(ref _lazyReturnType, _underlying.ReturnTypeWithAnnotations.GetPublicSymbol(), null); 97return _underlying.ReturnTypeWithAnnotations.ToPublicAnnotation(); 108_underlying); 113_underlying.TypeArgumentsWithAnnotations.ToPublicAnnotations(); 119return _underlying.TypeParameters.GetPublicSymbols(); 130_underlying); 138return _underlying.ConstructedFrom.GetPublicSymbol(); 146return _underlying.IsEffectivelyReadOnly; 154return _underlying.IsInitOnly; 162return _underlying.OriginalDefinition.GetPublicSymbol(); 170return _underlying.OverriddenMethod.GetPublicSymbol(); 180Interlocked.CompareExchange(ref _lazyReceiverType, _underlying.ReceiverType?.GetITypeSymbol(_underlying.ReceiverNullableAnnotation), null); 187CodeAnalysis.NullableAnnotation IMethodSymbol.ReceiverNullableAnnotation => _underlying.ReceiverNullableAnnotation; 193return _underlying.ReducedFrom.GetPublicSymbol(); 199return _underlying.GetTypeInferredDuringReduction( 207return _underlying.ReduceExtensionMethod( 214if (_underlying.GetIsNewExtensionMember() && SourceMemberContainerTypeSymbol.IsAllowedExtensionMember(_underlying)) 217return (IMethodSymbol?)SourceNamedTypeSymbol.ReduceExtensionMember(compilation: null, _underlying, csharpReceiver, wasExtensionFullyInferred: out _).GetPublicSymbol(); 228return _underlying.ExplicitInterfaceImplementations.GetPublicSymbols(); 236return _underlying.AssociatedSymbol.GetPublicSymbol(); 244return _underlying.IsGenericMethod; 252return _underlying.IsAsync; 260return _underlying.HidesBaseMethodsByName; 268return _underlying.ReturnTypeWithAnnotations.CustomModifiers; 276return _underlying.RefCustomModifiers; 282return _underlying.GetReturnTypeAttributes().Cast<CSharpAttributeData, AttributeData>(); 285SignatureCallingConvention IMethodSymbol.CallingConvention => _underlying.CallingConvention.ToSignatureConvention(); 287ImmutableArray<INamedTypeSymbol> IMethodSymbol.UnmanagedCallingConventionTypes => _underlying.UnmanagedCallingConventionTypes.SelectAsArray(t => t.GetPublicSymbol()); 291return _underlying.Construct(ConstructTypeArguments(typeArguments)).GetPublicSymbol(); 296return _underlying.Construct(ConstructTypeArguments(typeArguments, typeArgumentNullableAnnotations)).GetPublicSymbol(); 303return _underlying.PartialImplementationPart.GetPublicSymbol(); 311return _underlying.PartialDefinitionPart.GetPublicSymbol(); 315bool IMethodSymbol.IsPartialDefinition => _underlying.IsDefinition && _underlying.IsPartialDefinition(); 325int IMethodSymbol.Arity => _underlying.Arity; 327bool IMethodSymbol.IsExtensionMethod => _underlying.IsExtensionMethod; 329System.Reflection.MethodImplAttributes IMethodSymbol.MethodImplementationFlags => _underlying.ImplementationAttributes; 331bool IMethodSymbol.IsVararg => _underlying.IsVararg; 333bool IMethodSymbol.IsCheckedBuiltin => _underlying.IsCheckedBuiltin; 335bool IMethodSymbol.ReturnsVoid => _underlying.ReturnsVoid; 337bool IMethodSymbol.ReturnsByRef => _underlying.ReturnsByRef; 339bool IMethodSymbol.ReturnsByRefReadonly => _underlying.ReturnsByRefReadonly; 341RefKind IMethodSymbol.RefKind => _underlying.RefKind; 343bool IMethodSymbol.IsConditional => _underlying.IsConditional; 345bool IMethodSymbol.IsIterator => _underlying.IsIterator; 347DllImportData IMethodSymbol.GetDllImportData() => _underlying.GetDllImportData(); 354if (!_underlying.GetIsNewExtensionMember()) 359var implDefinition = _underlying.OriginalDefinition.TryGetCorrespondingExtensionImplementationMethod(); 365var enclosing = _underlying.ContainingType.ContainingType; 370typeArguments.AddRange(_underlying.ContainingType.TypeArgumentsWithAnnotationsNoUseSiteDiagnostics); 371typeArguments.AddRange(_underlying.TypeArgumentsWithAnnotations);