Get a list of suites whos bin paths are visible on $PATH.

        Returns:
            List of `Suite` objects.

def load_visible_suites(cls, paths=None):
        """Get a list of suites whos bin paths are visible on $PATH.

        Returns:
            List of `Suite` objects.
        """
        suite_paths = cls.visible_suite_paths(paths)
        suites = [cls.load(x) for x in suite_paths]
        return suites