Pred
case
Constraint on nodes (it has a name and a predicate).
Note: pred is defined in the 2nd parameter section to avoid equality and hashing of functions
trait Serializable
trait Product
trait Equals
class Object
trait Matchable
class Any
Constraint on nodes (it has a name and a predicate).
Note: pred is defined in the 2nd parameter section to avoid equality and hashing of functions