code: def query_func_module(self, func):
          
          exp = self.session.query(Export).filter_by(
              func=func).first()
          if exp:
              return exp
          logging.debug(_('Function not found: %s'), func)
          alt = func + 'A'
          exp = self.session.query(Export).filter_by(
              func=alt).first()
          if exp:
              logging.warning(_('Using ANSI version: %s'), alt)
              return exp
          logging.warning(_('Not handled: %s or %s'), func, alt)
          return None
docs: Query the module name of the specified function.