public static @Nullable String leftToRightOperatorName(@Nullable String name) {
    if (name == null) return null;

    final String rightComparisonOperatorName = leftToRightComparisonOperatorName(name);
    if (rightComparisonOperatorName != null) return rightComparisonOperatorName;

    return name.replaceFirst("__([a-z]+)__", "__r$1__");
  }
public static @Nullable String leftToRightOperatorName(@Nullable String name)