'Test if self contains the element object.  This is used mainly for
internal use for automatic (experimental) testing of specifications.
The env argument is according to specification of TestEnv in Spec.py.
It provides support for things that depends on the specific test
situation, such as a test reporting protocol. If test_contains did
find the element to be contained in self, the method will return
(usually True). But if the element was not contained in self, the
method should call env.failed(message), and return whatever may
be returned; though typically env.failed() would raise an exception.'

def test_contains(self, element, env):

    return self.fam.c_test_contains(self, element, env)
