code: function() {
  			var self = this;
  
  			self._attachment = null;
  
  			self._open_button.text( self.options.label_add );
  			self._remove_button.hide();
  			self._content.hide().empty().removeClass( 'size-auto' );
  		}
docs: Resets the preview content markup.
  
  @since 0.1.0
  
  @returns {void}