src/main/java/org/tenidwa/collections/utils/ContentMap.java
private ImmutableMap<C, V> mapContentToValues(
        final ImmutableMap<K, V> base
    ) {
        final ImmutableMap.Builder<C, V> builder = ImmutableMap.builder();
        for (final Entry<K, V> entry : base.entrySet()) {
            builder.put(
                this.key(entry.getKey()),
                entry.getValue()
            );
        }
        return builder.build();
    }
private ImmutableMap<C, V> mapContentToValues(
        final ImmutableMap<K, V> base
    ) {
        final ImmutableMap.Builder<C, V> builder = ImmutableMap.builder();
        for (final Entry<K, V> entry : base.entrySet()) {
            builder.put(
                this.key(entry.getKey()),
                entry.getValue()
            );
        }
        return builder.build();
    }
Maps the content of the base map to its values.
@param base Base map
@return Map from content of the base map to its values.