assertNull(emptyIterator.next(), "Iterator should still return null after multiple removes");
    }

    @Test
    @DisplayName("EmptyIterator should maintain state after all operations")
    void testStateConsistencyAfterOperations() {
        // When - perform various operations
        assertFalse(emptyIterator.hasNext(), "Initial hasNext check");
        assertNull(emptyIterator.next(), "Initial next call");