این قطعه کد چگونه کار می کند

[{mahdi}]

var CompositeForm = function(id, method, action) {
this.implementsInterfaces = ['Composite', 'FormItem'];
};
function implements(object) {
for(var i = 1; i < arguments.length; i++) {
var interfaceName = arguments[i];
var interfaceFound = false;
for(var j = 0; j < object.implementsInterfaces.length; j++) {
if(object.implementsInterfaces[j] == interfaceName) {
interfaceFound = true;
break;
}
}
if(!interfaceFound)
return false;
}
return true;
}
function addForm(formInstance) {
if(!implements(formInstance, 'Composite', 'FormItem')) {
throw new Error("Object does not implement a required interface.");
}
};