code: function(selector){
                  return _chain.call(this, 'into', selector, validators.selector, function(selector){
                      if(typeof selector === 'string'){
                          return document.querySelectorAll(selector);
                      }
                      if(selector instanceof HTMLElement){
                          return [selector];
                      }
                  });
              }
docs: Into selector getter/setter. When you want an Element to contain the response.
  
  @example aja().into('div > .container');
  
  @throws TypeError
  @param {String|HTMLElement} [selector] - the dom query selector or directly the Element
  @returns {Aja|Array} chains or get the list of found elements