Iterator<Entry<E>> entryIterator = entryIterator();
    if (entryIterator.hasNext()) {
      Entry<E> result = entryIterator.next();
      result = Multisets.immutableEntry(result.getElement(), result.getCount());
      entryIterator.remove();
      return result;
    }
    return null;
  }

  @Override
  public @Nullable Entry<E> pollLastEntry() {

    void testIsSigningEnforcedReturnsTrue() {
        // Given
        when(negotiationRequest.isSigningEnforced()).thenReturn(true);

        // When
        boolean result = negotiationRequest.isSigningEnforced();

        // Then
        assertTrue(result, "isSigningEnforced should return true when signing is enforced");
        verify(negotiationRequest, times(1)).isSigningEnforced();
    }

    @Test

        byte[] buffer = new byte[1024];

        int result = setupAndX.readBytesWireFormat(buffer, 0);

        // The implementation always returns 0
        assertEquals(0, result, "readBytesWireFormat returns 0");
    }

    @Test
    void testToString() {
        String result = setupAndX.toString();
        assertNotNull(result);

        assertEquals(user, chain3.lastUpdatedUser);
    }

    // Test changePassword with no chains
    public void test_changePassword_noChains() {
        boolean result = authenticationManager.changePassword("testuser", "newpass");
        assertTrue(result); // Returns true when no chains present
    }

    // Test changePassword with single chain success
    public void test_changePassword_singleChain_success() {

        void testToString() {
            String result = smbInfoAllocation.toString();

            assertNotNull(result);
            assertTrue(result.contains("SmbInfoAllocation"));
            assertTrue(result.contains("alloc="));
            assertTrue(result.contains("free="));
            assertTrue(result.contains("sectPerAlloc="));
            assertTrue(result.contains("bytesPerSect="));
        }
    }

        assertNotNull(result);
        assertTrue(result.isPresent());
        assertEquals(testValue, result.get());
        assertEquals(0, result.get().size());
    }

    public void test_ofNullable_withNullList() {
        List<String> testValue = null;
        OptionalEntity<List<String>> result = OptionalUtil.ofNullable(testValue);

        assertNotNull(result);

        String longString1 = "a".repeat(1000);
        String longString2 = "b".repeat(1000);
        String result = StringUtil.join(",", longString1, longString2);
        assertEquals(2001, result.length()); // 1000 + 1 + 1000
        assertTrue(result.startsWith("aaa"));
        assertTrue(result.endsWith("bbb"));
        assertTrue(result.contains(","));
    }

    @Test
    @DisplayName("Should handle long delimiter")

        ComponentUtil.register(systemHelper, "systemHelper");
        ComponentUtil.setFessConfig(fessConfig);

        // Execute
        String result = pingSearchEngineJob.execute();

        // Assert
        assertEquals("Status of test-cluster is changed to GREEN.", result);
    }

    // Test normal operation with YELLOW status and no state change
    public void test_execute_yellowStatusNoChange() {

        assertTrue("Result should contain password={cipher}, but was: " + result, result.contains("password={cipher}"));

        // Test with empty encryption target
        value = "password=";
        result = ParameterUtil.encrypt(value);
        assertTrue(result.contains("password={cipher}"));

        // Test with only whitespace value

    }

    @Override
    public int hashCode() {
        int result = 13;

        if (lowerBound == null) {
            result += 1;
        } else {
            result += lowerBound.hashCode();
        }

        result *= lowerBoundInclusive ? 1 : 2;

        if (upperBound == null) {
            result -= 3;
        } else {
            result -= upperBound.hashCode();
        }