runtime/src/main/java/org/echocat/jomon/runtime/CollectionUtils.java
@Nonnull
    public static <K, V> Map<K, V> putAllAndMakeImmutable(@Nonnull Map<K, V> original, @Nullable Object... a) {
        return asImmutableMap(CollectionUtils.putAll(original, a));
    }
@Nonnull
    public static <K, V> Map<K, V> putAllAndMakeImmutable(@Nonnull Map<K, V> original, @Nullable Object... a) {
        return asImmutableMap(CollectionUtils.putAll(original, a));
    }
Returns a the given map enriched
with the mappings <code>a[0] => a[1], a[2] => a[3], ...</code>.
@param a the elements to construct a {@link Map} from.
@return a immutable {@link Map} constructed of the specified elements.