code: def namespace(self):
          
          if self.m_name == -1 or (self.m_event != const.START_TAG and self.m_event != const.END_TAG):
              return u''
  
          # No Namespace
          if self.m_namespaceUri == 0xFFFFFFFF:
              return u''
  
          return self.sb[self.m_namespaceUri]
docs: Return the Namespace URI (if any) as a String for the current tag