Microsoft.CodeAnalysis.ReplaceConditionalWithStatements.AbstractReplaceConditionalWithStatementsCodeRefactoringProvider<TExpressionSyntax, TConditionalExpressionSyntax, TStatementSyntax, TLocalDeclarationStatementSyntax, TArgumentSyntax, TArgumentListSyntax, TVariableSyntax, TVariableDeclaratorSyntax, TEqualsValueClauseSyntax>.HasSingleVariable(TLocalDeclarationStatementSyntax, out TVariableSyntax)