code: function __process_authorization_header_for_client(request_params) {
      return new Promise(async (resolve, reject) => {
          try {
              const client_account_id = await client_endpoint
                  .client_registrar_module
                  .get_client_account_id_for_credentials(request_params.authorization_credentials.username, request_params.authorization_credentials.password);
  
              return resolve(request_params);
          } catch (err) {
              return reject(new Error("Unauthorized request"));
          }
      });
  }
docs: The authorization header credentials will be checked with the clien_registrar.
  
  @param  {[type]} request_params [description]
  @return {[type]}                [description]