<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def delete(self) : """deletes the collection from the database"""

        r = self.connection.session.delete(self.URL)
        data = r.json()
        if not r.status_code == 200 or data["error"] :
            raise DeletionError(data["errorMessage"], data)