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 delete_snapshot(self, snapshot_id):
        """Delete Snapshot."""
        return self.delete("snapshots/%s" % str(snapshot_id))