code: def listar_healtchcheck_expect_distinct(self):
          
  
          url = 'healthcheckexpect/distinct/busca/'
  
          code, xml = self.submit(None, 'GET', url)
  
          return self.response(code, xml)
docs: Get all expect_string.
  
          :return: Dictionary with the following structure:
  
          ::
  
              {'healthcheck_expect': [
               'expect_string': < expect_string >,
               ... demais healthcheck_expects ...]}
  
  
          :raise InvalidParameterError: Identifier is null and invalid.
          :raise DataBaseError: Networkapi failed to access the database.
          :raise XMLError: Networkapi failed to generate the XML response.