code: function Messages(options) {
    this.builder = Messages.builder(options);
  
    // map message constructors by name
    for(var key in this.builder.commandsMap) {
      var name = this.builder.commandsMap[key];
      this[name] = this.builder.commands[key];
    }
  
    if (!options) {
      options = {};
    }
    this.network = options.network || axecore.Networks.defaultNetwork;
  }
docs: A factory to build Bitcoin protocol messages.
  @param {Object=} options
  @param {Network=} options.network
  @param {Function=} options.Block - A block constructor
  @param {Function=} options.BlockHeader - A block header constructor
  @param {Function=} options.MerkleBlock - A merkle block constructor
  @param {Function=} options.Transaction - A transaction constructor
  @param {Function=} options.MnListDiff - A masternode difference list constructor
  @constructor