SpecialMethod
A method implementing a protocol, such as (init) or (next). Its class is
its parent.
The name span includes the parentheses the protocol name is written in. A
special method is part of the type's interface however it was declared, so
there is no visibility to report.
Inherits from: Declaration
Fields
type_only @ BoolWhether the method has no body: an overload signature or a protocol member.