public static <V> @NotNull Map<String, V> createCaseInsensitiveStringMap(@NotNull Map<String, V> source) {
    return new Object2ObjectOpenCustomHashMap<>(source, FastUtilHashingStrategies.getCaseInsensitiveStringStrategy());
  }
public static <V> @NotNull Map<String, V> createCaseInsensitiveStringMap(@NotNull Map<String, V> source)