Class Hierarchy
- java.lang.Object
- org.cactoos.collection.Immutable<X> (implements java.util.Collection<E>)
- org.cactoos.iterable.IterableEnvelope<X> (implements java.lang.Iterable<T>)
- org.cactoos.collection.CollectionEnvelope<X> (implements java.util.Collection<E>)
- org.cactoos.collection.NoNulls<X> (implements java.util.Collection<E>)