libtest-deep-type-perl 0.008-1 (s390x binary) in ubuntu bionic

 Test::Deep::Type provides the sub is_type to indicate that the data being
 tested must validate against the passed type. This is an actual type object,
 not a string name -- for example something provided via MooseX::Types, or a
 plain old coderef that returns a bool (such as what might be used in a Moo
 type constraint).