Must be implemented by the user of Magnolia to construct a typeclass for case class T using the provided type info. E.g. if we are deriving Show[T] typeclasses, and T is a case class Foo(...), we need to constuct Show[Foo].
Must be implemented by the user of Magnolia to construct a typeclass for case class T using the provided type info. E.g. if we are deriving Show[T] typeclasses, and T is a case class Foo(...), we need to constuct Show[Foo].
This method is called 'join' because typically it will join together the typeclasses for all the parameters of the case class, into a single typeclass for the case class itself. The field CaseClass.params can provide useful information for doing this.
Value parameters
caseClass
information about the case class T, its parameters, and their typeclasses