Test for creating a module of functions from invocations

[PaulSandoz]

Given a set of reflectable methods that form a call graph, we can create a code model that is a module operation containing the functions in that graph where invocation operations are replaced with function call operations. Starting from the a model of a method, we can traverse it for invocation operations. If the invocation operation's method reference can be resolved to a method and the method has a model then that model is added to the module, the invocation operation is replaced with a function call operation, and it is traversed for invocation operations and so on.

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