code: function(anim, att, from, to, elapsed, duration, fn, unit) {
          from = Number(from);
          to = Number(to);
  
          var node = anim._node,
              val = Transition.cubicBezier(fn, elapsed / duration);
  
          val = from + val[0] * (to - from);
  
          if (att in node._node.style || att in Y.DOM.CUSTOM_STYLES) {
              unit = unit || '';
              node.setStyle(att, val + unit);
          } else if (node._node.attributes[att]) {
              node.setAttribute(att, val);
          } else {
              node.set(att, val);
          }
      }
docs: /*
  The default setter to use when setting object properties.
  
  @property DEFAULT_SETTER
  @static