private static @Nullable String substringAfterFoundOrNull(final @NotNull String value,
      final int found, final int end) {
    return found < 0 ? null : value.substring(found + 1, end);
  }
Required to initialize non-null values for transient or missing fields.
geode-core/src/main/java/org/apache/geode/internal/admin/remote/DistributionLocatorId.java