code: def set_vcard(self, vcard):
          
          iq = aioxmpp.IQ(
              type_=aioxmpp.IQType.SET,
              payload=vcard,
          )
          yield from self.client.send(iq)
docs: Store the vCard `vcard` for the connected entity.
  
          :param vcard: the vCard to store.
  
          .. note::
  
             `vcard` should always be derived from the result of
             `get_vcard` to preserve the elements of the vcard the
             client does not modify.
  
          .. warning::
  
             It is in the responsibility of the user to supply valid
             vcard data as per :xep:`0054`.