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