public override TDeclarationNode AddAttributes <TDeclarationNode>(
TDeclarationNode destination,
IEnumerable <AttributeData> attributes,
SyntaxToken?target,
CodeGenerationOptions options,
CancellationToken cancellationToken)
{
if (target.HasValue && !target.Value.IsValidAttributeTarget())
{
throw new ArgumentException("target");
}
var attributeSyntaxList = AttributeGenerator.GenerateAttributeLists(attributes.ToImmutableArray(), options, target).ToArray();
return(destination switch
{
MemberDeclarationSyntax member => Cast <TDeclarationNode>(member.AddAttributeLists(attributeSyntaxList)),
AccessorDeclarationSyntax accessor => Cast <TDeclarationNode>(accessor.AddAttributeLists(attributeSyntaxList)),
CompilationUnitSyntax compilationUnit => Cast <TDeclarationNode>(compilationUnit.AddAttributeLists(attributeSyntaxList)),
ParameterSyntax parameter => Cast <TDeclarationNode>(parameter.AddAttributeLists(attributeSyntaxList)),
TypeParameterSyntax typeParameter => Cast <TDeclarationNode>(typeParameter.AddAttributeLists(attributeSyntaxList)),
_ => destination,
});
