docs: def case(self, case):
          """Get a case from the database
  
              Search the cases with the case id
  
              Args:
                  case (dict): A case dictionary
  
              Returns:
                  mongo_case (dict): A mongo case dictionary
          """
          LOG.debug("Getting case {0} from database".format(case.get('case_id')))
          case_id = case['case_id']
          return self.db.case.find_one({'case_id': case_id})