function _setTransitionElement( element, setTransition ) {
    var transition = setTransition;
    if ( transition ) {
      transition.setElement( element );
    } else {
      transition = new MoveTransition( element ).init();
    }

    return transition;
  }
/**
   * Set an element on an existing transition or create a new transition.
   * @param {HTMLNode} element - Target of a transition.
   * @param {MoveTransition} [setTransition] - The transition to apply.
   * @returns {MoveTransition}
   *   The passed in transition or a new transition if none was supplied.
   */
Set an element on an existing transition or create a new transition.
@param {HTMLNode} element - Target of a transition.
@param {MoveTransition} [setTransition] - The transition to apply.
@returns {MoveTransition}
The passed in transition or a new transition if none was supplied.
Set an element on an existing transition or create a new transition . @param { HTMLNode } element - Target of a transition . @param { MoveTransition } [ setTransition ] - The transition to apply . @returns { MoveTransition } The passed in transition or a new transition if none was supplied .
function _setTransitionElement( element, setTransition ) {
    var transition = setTransition;
    if ( transition ) {
      transition.setElement( element );
    } else {
      transition = new MoveTransition( element ).init();
    }
    return transition;
  }
function _setTransitionElement ( element , setTransition ) { var transition = setTransition ; if ( transition ) { transition . setElement ( element ) ; } else { transition = new MoveTransition ( element ) . init ( ) ; } return transition ; }
Set an element on an existing transition or create a new transition.
Set an element on an existing transition or create a new transition .