text: export const BEGIN_API_CALL = 'BEGIN_API_CALL';
  export const API_CALL_ERROR = 'API_CALL_ERROR';
  
  export const CREATE_MESSAGE = 'CREATE_MESSAGE';
  export const LOAD_MESSAGES_SUCCESS = 'LOAD_MESSAGES_SUCCESS';
  export const CREATE_MESSAGE_SUCCESS = 'CREATE_MESSAGE_SUCCESS';
  export const UPDATE_MESSAGE_SUCCESS = 'UPDATE_MESSAGE_SUCCESS';
  export const DELETE_MESSAGE_SUCCESS = 'DELETE_MESSAGE_SUCCESS';
  