Class.fromJSON Method
        
 A static method to create a class instance from the specified JSON. The property
 __classType is used to determine the type.
 
         
         
        
            
 This method is static. 
        Parameters
        
            - json
            
 
            - 
                
Type: String
The JSON string specifying the object. 
        
        Return Value
        
Type: Object - May be null
An instance of an object type inheriting from Class; or null if the JSON is malformed or if _classType does not refer to a defined class.