Query the controller with the filename of the AST node for a decision if it shall be processed.
Generate test doubles of free functions
If any google mocks are generated.
If pretty print functions for google test are generated.
Generate a #include of the post include header
Generate a #include of the pre include header
Generate a post_include header file from internal template?
Generate a pre_include header file from internal template?
A list of includes for the test double header.
Control various aspectes of the analyze and generation like what nodes to process.