public override UstNode VisitDelegateDeclaration(DelegateDeclarationSyntax node)
{
var typeType = ConvertTypeType(TypeType.Delegate);
var typeTypeToken = new TypeTypeLiteral(typeType, node.DelegateKeyword.GetTextSpan(), FileNode);
var result = new TypeDeclaration(typeTypeToken, ConvertId(node.Identifier), new EntityDeclaration[0],
node.GetTextSpan(), FileNode);
return(result);
}