private PropertyDeclarationSyntax GetPropertyNodeWithDiagnostic(SyntaxNode root, TextSpan diagnosticSpan)
{
SyntaxNode node = root?.FindNode(diagnosticSpan);
return(node switch
{
PropertyDeclarationSyntax propertyDeclaration => propertyDeclaration,
IdentifierNameSyntax propertyTypeDeclaration
when propertyTypeDeclaration.Parent is PropertyDeclarationSyntax propertyDeclaration => propertyDeclaration,
TypeSyntax propertyTypeDeclaration => propertyTypeDeclaration.Parent <PropertyDeclarationSyntax>(),
AttributeListSyntax attributeListNode
when attributeListNode.Parent is PropertyDeclarationSyntax propertyDeclaration => propertyDeclaration,
AttributeSyntax attributeNode => attributeNode.Parent <PropertyDeclarationSyntax>(),
_ => null,
});