code: function getElData(el) {
    var id = el[elIdAttr];
  
    if (!id) {
      id = el[elIdAttr] = Guid.newGUID();
    }
  
    if (!elData[id]) {
      elData[id] = {};
    }
  
    return elData[id];
  }
docs: Returns the cache object where data for an element is stored
  
  @param  {Element} el Element to store data for.
  @return {Object}
  @function getElData