Represents a type parameter declaration in the AST.
@:optionaloptionalparams:Null<Array<TypeParamDecl>>
The optional parameters of the type parameter.
name:String
The name of the type parameter.
@:optionaloptionalmeta:Null<Metadata>
The metadata of the type parameter.
@:optionaloptionalconstraints:Null<Array<ComplexType>>
The optional constraints of the type parameter.