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