Represents a function argument in the AST.

@:optionaloptionalvalue:Null<Expr>

The optional value of the function argument, if available.

@:optionaloptionaltype:Null<ComplexType>

The type-hint of the function argument, if available.

@:optionaloptionalopt:Null<Bool>

Whether or not the function argument is optional.

name:String

The name of the function argument.

@:optionaloptionalmeta:Null<Metadata>

The metadata of the function argument.