<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _validate_write(self, address):
 """Raises an exception if the address is not allowed to be set in this context, based on txn outputs. Notes: Checks that the address is either listed fully as one of the outputs, or some portion of the address is listed as a namespace in the outputs of the txn. Args: address (str):
 The address to be validated. The context manager validates the address correctness (70 hex characters). Returns: None Raises: AuthorizationException """


        if not any(address.startswith(ns) for ns in self._write_list):
            raise AuthorizationException(address=address)