Calling Callout From Callout Engine

Must call below function from within the "callout" class. 
 

VIS.CalloutEngine.call(this, className); 

Here "this" refer to current class and "className" refer to namespace. Both parameter used to call base class i.e. calloutengine class for creating run time call of current object. 

Example: 

function TestClass() { 

//first partmeter this refer to current class 

//second parameter MPC.TestClass refer namespace of callout class. 

VIS.CalloutEngine.call(this, "MPC.TestClass"); //must call 

};