whole_func_string: function (elements) {
      if (!_.isArray(elements)) {
        elements = [ elements ];
      }
      elements.forEach(function (e) {
        this.push(e);
      }.bind(this));
      return this;
    }
func_code_string: function (elements) {
      if (!_.isArray(elements)) {
        elements = [ elements ];
      }
      elements.forEach(function (e) {
        this.push(e);
      }.bind(this));
      return this;
    }
func_documentation_string: Add elements to the list
  
  @param elements
  @returns {ArrayList}