}

    List<SourceFile> getAlternateLibrarySources(String headerPath) {
        updateCommonHeaderPath(app.getAlternateLibrarySources(), headerPath)
    }

    SourceFile getCommonHeader(String path = "") {
        updateSourceFilePath(app.getCommonHeader(), path)
    }

    SourceFile getAlternateLibraryHeader() {
        replaceInSourceFile(app.getLibraryHeader(), "compiling hello.h", "compiling alternate hello.h")
    }