wp-media-picker.js
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' );
		}
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' );
		}
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' ) ; }
Resets the preview content markup.

@since 0.1.0

@returns {void}
Resets the preview content markup .