code: function(wiringConfig, frameLevel, parentFrame, parentIndex) {
     
     // save the initial config
     this.wiringConfig = wiringConfig;
     
     // save the parent frame
     this.frameLevel = frameLevel || 0;
     this.parentFrame = parentFrame;
     this.parentIndex = parentIndex;
     
     // Will contains the execution values (this.execValues[module][outputName] = the value)
     this.execValues = {};
     
  }
docs: An "ExecutionFrame" is the equivalent to the jsBox layer.
  It contains a set module instances and a set of wires linking them.
  @class ExecutionFrame
  @constructor
  @param {Object} wiringConfig The wiring config