code: def _bind_as(self, bind_dn, bind_password, sticky=False):
          
          self._get_connection().simple_bind_s(bind_dn, bind_password)
  
          self._connection_bound = sticky
docs: Binds to the LDAP server with the given credentials. This does not trap
          exceptions.
  
          If sticky is True, then we will consider the connection to be bound for
          the life of this object. If False, then the caller only wishes to test
          the credentials, after which the connection will be considered unbound.