protected void TestCodeRefactoringAtLine(Document document, string expected, int line, int refactoringIndex = 0)
{
var locator = LineLocator.FromDocument(document, line);
TestCodeRefactoring(document, expected, locator, refactoringIndex);
}
protected void HasDiagnosticAtLine(Document document, string diagnosticId, int lineNumber)
{
var locator = LineLocator.FromDocument(document, lineNumber);
HasDiagnostic(document, diagnosticId, locator);
}