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# ->guessRootDir() ->guessName()
 -  guesses plugin root directory
 -  guesses plugin name
# ->filterTestFiles()
 -  adds all plugin tests
 -  adds functional plugin tests
 -  adds functional plugin tests when a controller is specified
 -  adds functional plugin tests when a nested controller is specified
 -  adds unit plugin tests
 -  adds unit plugin tests when a name is specified
 -  adds unit plugin tests when a nested name is specified
# Looks like everything went fine.