Arduino: 1.8.12 (Mac OS X), Board: "Arduino Due (Programming Port)"

/Volumes/.../SketchBook/libraries/SetUpRoutine/SetupRoutine.cpp: In member function 'int SetupRoutine::JustASillyLibraryRoutine(int)':
/Volumes/.../SketchBook/libraries/SetUpRoutine/SetupRoutine.cpp:11:3: error: 'Test02' was not declared in this scope
   Test02.JustASillyInLineRoutine();
   ^
exit status 1
Error compiling for board Arduino Due (Programming Port).

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