code: private void parseDefaultPropertyFileFromFile(File potentialPropertyFile) throws IOException,
              CommandLineParsingException {
          try (FileInputStream stream = new FileInputStream(potentialPropertyFile)) {
              parsePropertiesFile(stream);
          }
      }
docs: Open a regular property file (not embedded in a resource - use {@link #parseDefaultPropertyFileFromResource}
  for that) and parse it.
  
  @param potentialPropertyFile path and file name to the the property file
  @throws IOException                 if the file cannot be opened
  @throws CommandLineParsingException if an error occurs during parsing