code: def set_user_licenses(self, user, add=None, remove=None):
            # noqa
          url = '/users/%s/assignLicense' % (user)
          add_licenses = []
          if add:
              for l in add:
                  add_licenses.append({
                      'skuId': l,
                      'disabledPlans': add[l]
                  })
  
          body = {
              'addLicenses': add_licenses,
              'removeLicenses': remove if remove else []
          }
  
          data = self.post_resource(url, json=body)
          return data
docs: Implements: assignLicense
          https://msdn.microsoft.com/library/azure/ad/graph/api/functions-and-actions#assignLicense
  
          "add" is a dictionary of licence sku id's that reference an
          array of disabled plan id's
               add = { '<license-sku-id>': ['<disabled-plan-id'>, ...]
          "remove" is an array of license sku id's
               remove = ['<license-sku-id'>, ...]