code: def add_many(self, data):
          
          assert isinstance(data, list), "Incorrect format. Expecting list."
          if self.is_none or self.is_any:
              self.clear()
              self.data[self.typeof] = []
  
          data = element_resolver(data, do_raise=False)
          self.data[self.typeof] = data
docs: Add multiple entries to field. Entries should be list format.
          Entries can be of types relavant to the field type. For example,
          for source and destination fields, elements may be of type 
          :py:mod:`smc.elements.network` or be the elements direct href,
          or a combination of both.
  
          Add several entries to existing rule::
  
              policy = FirewallPolicy('policy')
              for rule in policy.fw_ipv4_nat_rules.all():
                  if rule.name == 'therule':
                      rule.sources.add_many([Host('myhost'), 
                                            'http://1.1.1.1/hosts/12345'])
                      rule.save()
  
          :param list data: list of sources
  
          .. note:: If submitting type Element and the element cannot be
                    found, it will be skipped.