* also relies on object identity of funnels.
   *
   * @param funnel the funnel of T's that the constructed {@code BloomFilter} will use
   * @param expectedInsertions the number of expected insertions to the constructed {@code
   *     BloomFilter}; must be positive
   * @return a {@code Collector} generating a {@code BloomFilter} of the received elements

            final ASN1TaggedObject constructed = (ASN1TaggedObject) is.readObject();
            if (constructed == null || constructed.getTagClass() != BERTags.APPLICATION
                    || !(constructed.getBaseObject() instanceof ASN1Sequence)) {
                throw new IOException("Malformed SPNEGO token " + constructed);
            }

        // Verify that the policyHandle passed to the constructor is the one used
        // This is implicitly tested by the object being constructed without errors.
        // If LsaPolicyHandle had methods called by the constructor, we would verify those calls.
    }

        // Assert
        assertEquals(expected, actual, "Hex string should match expected format");
    }

    // Ensures a default-constructed blob starts empty and stable across APIs
    @Test
    @DisplayName("Default constructor yields empty state")
    void defaultConstructor_initialState() {
        // Arrange & Act
        SecurityBlob blob = new SecurityBlob();

        // Assert

  }

  /**
   * Returns, as an immutable list, the row keys provided when the table was constructed, including
   * those that are mapped to null values only.
   */
  public ImmutableList<R> rowKeyList() {
    return rowList;
  }

  /**
   * Returns, as an immutable list, the column keys provided when the table was constructed,
   * including those that are mapped to null values only.
   */

        assertNull(e.getCause());
    }

    /**
     * Test the constructor with a cause.
     */
    @Test
    void testCauseConstructor() {
        Throwable cause = new RuntimeException("Root cause");
        PACDecodingException e = new PACDecodingException(cause);
        // When constructed with only a cause, the implementation passes (null, cause) to super

        // Although we cannot directly verify the super constructor call with Mockito for a real class,
        // we can infer its correct behavior if the object is successfully constructed and its own fields are correct.
        // The super constructor is called with (domainHandle, 0, acct_flags, null, 0)

        assertEquals("", emptyUnicodeStringFalse.toString(), "toString should return empty string for empty input without zterm");

        // Test toString with a manually constructed UnicodeString (simulating rpc.unicode_string input)
        rpc.unicode_string dummyRus = new rpc.unicode_string();
        dummyRus.buffer = new short[] { 'T', 'e', 's', 't', 'i', 'n', 'g' };

        QueryParseException queryParseException = new QueryParseException(null);
        assertNotNull(queryParseException);
        assertNull(queryParseException.getCause());
        // getMessage() may return null when constructed with null
        // This is expected behavior for exceptions with null cause
    }

    public void test_nestedCause() {
        // Test with nested exceptions

/**
 * Tests for the DfsReferral class.
 * This class tests the functionality of the DfsReferral class,
 * ensuring that objects are constructed correctly, appended properly,
 * and that the toString method returns the expected format.
 */
class DfsReferralTest {

    /**
     * Tests the default constructor of the DfsReferral class.
     * It verifies that a new DfsReferral object is initialized with its 'next'