def loads(self, requirements_text):
        lines = re.findall(Requirement.spec_regex,
                           requirements_text,
                           re.MULTILINE)
        for line in lines:
            self.add(Requirement(line[0], "".join(line[1:])))
def is_resource_deleted(self, id):
        try:
            self.get_snapshot(id)
        except exceptions.NotFound:
            return True
        return False