new Object() {
                  @Override
                  public String toString() {
                    return "I'm a string";
                  }
                }));
    assertThrows(NullPointerException.class, () -> Functions.toStringFunction().apply(null));
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testToStringFunctionSerializable() {

        SIDCacheImpl cache = new SIDCacheImpl(mock(CIFSContext.class));
        CIFSContext ctx = mock(CIFSContext.class);

        // Null sids array -> NPE
        assertThrows(NullPointerException.class, () -> cache.resolveSids(ctx, "server", null, 0, 1));

        // Bad offset/length leads to ArrayIndexOutOfBoundsException
        jcifs.SID[] sids = new jcifs.SID[] { sid("S-1-1-0") };

            // The implementation calls Hexdump.toHexString which throws NPE on null
            // This test verifies the actual behavior
            assertThrows(NullPointerException.class, () -> notification.toString());
        }

        @ParameterizedTest
        @DisplayName("Should format different oplock levels correctly")

        }
      }
    }
  }

  public void testToArray_withNull() {
    List<@Nullable Float> list = Arrays.asList(0.0f, 1.0f, null);
    assertThrows(NullPointerException.class, () -> Floats.toArray(list));
  }

  public void testToArray_withConversion() {
    float[] array = {0.0f, 1.0f, 2.0f};

    List<Byte> bytes = Arrays.asList((byte) 0, (byte) 1, (byte) 2);

        }
      }
    }
  }

  public void testToArray_withNull() {
    List<@Nullable Integer> list = Arrays.asList((int) 0, (int) 1, null);
    assertThrows(NullPointerException.class, () -> Ints.toArray(list));
  }

  public void testToArray_withConversion() {
    int[] array = {0, 1, 2};

    List<Byte> bytes = Arrays.asList((byte) 0, (byte) 1, (byte) 2);

        }
      }
    }
  }

  public void testToArray_withNull() {
    List<@Nullable Float> list = Arrays.asList(0.0f, 1.0f, null);
    assertThrows(NullPointerException.class, () -> Floats.toArray(list));
  }

  public void testToArray_withConversion() {
    float[] array = {0.0f, 1.0f, 2.0f};

    List<Byte> bytes = Arrays.asList((byte) 0, (byte) 1, (byte) 2);

      assertEquals(0, cache.size());

      entry.setValue(3);
      assertEquals(1, cache.size());
      assertEquals(3, cache.getIfPresent(1));
      checkValidState(cache);

      assertThrows(NullPointerException.class, () -> entry.setValue(null));
      checkValidState(cache);
    }
  }

  /* ---------------- Local utilities -------------- */

   *   <li>All visible static methods are checked such that passing null for any parameter that's
   *       not annotated nullable (according to the rules of {@link NullPointerTester}) should throw
   *       {@link NullPointerException}.
   *   <li>If there is any visible constructor or visible static factory method declared by the
   *       class, all visible instance methods will be checked too using the instance created by

                new Object() {
                  @Override
                  public String toString() {
                    return "I'm a string";
                  }
                }));
    assertThrows(NullPointerException.class, () -> Functions.toStringFunction().apply(null));
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testToStringFunctionSerializable() {

        });
    }

    @Test
    @DisplayName("Should handle parsing null message bytes")
    void testNullMessageBytes() {
        // When/Then
        assertThrows(NullPointerException.class, () -> {
            new Type3Message((byte[]) null);
        });
    }

    /**
     * Helper method to create a mock Type 2 message for testing
     */