lib/domain/bases/commandHandlerBase.js
function(aggregate, vm, callback) {
                aggregate[cmd.command](cmd.payload, function(err) {
                    callback(err, aggregate, vm);
                });
            }
function(aggregate, vm, callback) {
                aggregate[cmd.command](cmd.payload, function(err) {
                    callback(err, aggregate, vm);
                });
            }
function ( aggregate , vm , callback ) { aggregate [ cmd . command ] ( cmd . payload , function ( err ) { callback ( err , aggregate , vm ) ; } ) ; }
call command function on aggregate
call command function on aggregate