'Randomizes the order of suites and/or tests, recursively.
:param suites: Boolean controlling should suites be randomized.
:param tests: Boolean controlling should tests be randomized.
:param seed: Random seed. Can be given if previous random order needs
to be re-created. Seed value is always shown in logs and reports.'

def randomize(self, suites=True, tests=True, seed=None):

    self.visit(Randomizer(suites, tests, seed))
