public static void compareFiles(final Path expectedFile, final Path actualFile) {
        compareFiles(expectedFile, actualFile, false, true);
    }
Generate a unified diff of the two files using the specified number of lines of context.
The diff output is sent to system out in coloured form.

@return True if the files are the same
stroom-test-common/src/main/java/stroom/test/common/ComparisonHelper.java