How to use the @shopgate/pwa-core.errorManager.setMessage function in @shopgate/pwa-core

subscribe(appWillStart$, () => {
    // Translate some error messages
    errorManager.setMessage({
      code: EINVALIDCREDENTIALS,
      context: SHOPGATE_USER_LOGIN_USER,
      message: 'login.error',
    });
  });
}

subscribe(appWillStart$, () => {
    // Translate some error messages
    errorManager.setMessage({
      code: EINVALIDCREDENTIALS,
      context: SHOPGATE_USER_LOGIN_USER,
      message: 'login.error',
    });
  });
}

subscribe(appWillStart$, () => {
    errorManager.setMessage({
      code: EUNKNOWN,
      message: transformGeneralPipelineError,
    }).setMessage({
      code: EBIGAPI,
      message: transformGeneralPipelineError,
    }).setMessage({
      code: ETIMEOUT,
      message: 'modal.body_error',
    }).setMessage({
      code: ENETUNREACH,
      message: 'modal.body_error',
    });
  });