public static void mergePythonPath(@NotNull Map<String, String> from, @NotNull Map<String, String> to) {
    String value = from.get(PYTHONPATH);
    if (value != null) {
      Set<String> paths = Sets.newHashSet(value.split(File.pathSeparator));
      addToPythonPath(to, paths);
    }
  }
public static void mergePythonPath(@NotNull Map<String, String> from, @NotNull Map<String, String> to)