Abstract: An improved host controller application for controlling the testing of manufactured units such as circuit boards. The improved host controller uses a unique system and method for accessing and utilizing new or different functionality so that the application may easily be adapted to changing manufacturing environments, such as using different tests to test manufactured units or circuit boards. More specifically, a system and method is provided that allows a host controller to interoperate with and obtain a result from a derived server having a first functionality based on an existing relationship between the client and a base server having a second functionality. The existing relationship is based on one or more unique identifiers that may be associated with an interface of the base server and which may be used to interoperate with encapsulated data and methods.

Abstract: A system and method is provided that allows a software application or client to access and utilize new or different functionality so that the application or client may evolve and improve. More specifically, a system and method is provided that allows a client to interoperate with and obtain a result from a derived server having a first functionality based on an existing relationship between the client and a base server having a second functionality. The existing relationship is based on one or more unique identifiers that may be associated with an interface of the base server and which may be used to interoperate with encapsulated data and methods. The system and method includes making one or more unique identifiers associated with the derived server identical to one or more unique identifiers associated with the base server.