code: function(options) {
        
        inputEx.Group.superclass.setOptions.call(this, options);
           	
     	this.options.className = options.className || 'inputEx-Group';
     	
     	this.options.fields = options.fields;
     	
     	this.options.flatten = options.flatten;
     
        this.options.legend = options.legend || '';
     
        this.options.collapsible = lang.isUndefined(options.collapsible) ? false : options.collapsible;
        this.options.collapsed = lang.isUndefined(options.collapsed) ? false : options.collapsed;
        
        this.options.disabled = lang.isUndefined(options.disabled) ? false : options.disabled;
        
        // Array containing the list of the field instances
        this.inputs = [];
  
        // Associative array containing the field instances by names
        this.inputsNames = {};
     }
docs: Adds some options: legend, collapsible, fields...
  @param {Object} options Options object as passed to the constructor