Method immutableCopy

corpus/java/training/guava/collect/Sets.java:559–561

Returns an immutable copy of the current contents of this set view. Does not support null elements. Warning: this may have unexpected results if a backing set of this view uses a nonstandard notion of equivalence, for example if it is a TreeSet using a comparator that is inconsist

()

     * Object#equals(Object)}.
     */
    public ImmutableSet<E> immutableCopy() {
      return ImmutableSet.copyOf(this);
    }

    /**
     * Copies the current contents of this set view into an existing set. This