Contents:
ClassIsAbstract
InterfaceException
MethodIsAbstract
WrongUsage
abstract()
Constraint
Constraint.check()
Constraint.context
Constraint.contextstr()
Constraint.throw()
ConstraintError
bool
bool.check()
float
float.check()
int
int.check()
literal
literal.check()
none
path
path.check()
interface()
parametrized()
singleton()
virtual()