docs: def get_orgas(self):
          """Return the list of pk for all orgas"""
  
          r = self._request('orgas/')
          if not r:
              return None
  
          retour = []
  
          for data in r.json()['data']:
              o = Orga()
              o.__dict__.update(data)
              o.pk = o.id
  
              retour.append(o)
  
          return retour