When two or more modules are combined into a single module, it may be possible to define an interface for the new module that is simpler or easier to use than the original interfaces. This often happens when the original modules each implement part of the solution to a problem. In the HTTP server example from the preceding section, the original methods required an interface to return the HTTP request string from the first method and pass it to the second. When the methods were combined, these interfaces were eliminated.
