if (iterator.hasNext()) {
      sb.append(", ...");
    }
    sb.append('>');

    throw new IllegalArgumentException(sb.toString());
  }

  /**
   * Returns the single element contained in {@code iterator}, or {@code defaultValue} if the
   * iterator is empty.
   *
   * @throws IllegalArgumentException if the iterator contains multiple elements. The state of the
   *     iterator is unspecified.
   */

        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withNestedCause() {
        // Test constructor with nested exception causes
        Throwable rootCause = new IllegalArgumentException("Root cause");
        Throwable middleCause = new IllegalStateException("Middle cause", rootCause);
        String message = "Command execution failed with nested exception";

  public final int count(@Nullable Object element) {
    return backingMap.get(element);
  }

  // Optional Operations - Modification Operations

  /**
   * {@inheritDoc}
   *
   * @throws IllegalArgumentException if the call would result in more than {@link
   *     Integer#MAX_VALUE} occurrences of {@code element} in this multiset.
   */
  @CanIgnoreReturnValue
  @Override

            }
        }
        assertTrue(foundTestMethod);
    }

    @Test
    public void test_nestedExceptions() {
        // Test nested exception handling
        Exception innerCause = new IllegalArgumentException("Invalid LDAP parameter");
        RuntimeException middleCause = new RuntimeException("LDAP configuration error", innerCause);

    had a crash `IllegalArgumentException: Not a Conscrypt trust manager` because we depended on
    initialization order of companion objects.


## Version 4.7.1

_2020-05-18_

 *  Fix: Pass the right arguments in the trust manager created for `addInsecureHost()`. Without the
    fix insecure hosts crash with an `IllegalArgumentException` on Android.


## Version 4.7.0

      return Primitives.wrap(type).cast(value);
    }

    /**
     * Returns a new immutable class-to-instance map containing the entries provided to this
     * builder.
     *
     * @throws IllegalArgumentException if duplicate keys were added
     */
    public ImmutableClassToInstanceMap<B> build() {
      ImmutableMap<Class<? extends B>, B> map = mapBuilder.buildOrThrow();
      if (map.isEmpty()) {
        return of();

  // SPI methods (what subclasses must implement)

  /**
   * Returns a representation of {@code a} as an instance of type {@code B}. If {@code a} cannot be
   * converted, an unchecked exception (such as {@link IllegalArgumentException}) should be thrown.
   *
   * @param a the instance to convert; will never be null
   * @return the converted instance; <b>must not</b> be null
   */
  @ForOverride
  protected abstract B doForward(A a);

                                        }
                                    }
                                }
                            } catch (IllegalArgumentException | IllegalAccessException e) {
                                throw new ModelInterpolationException(
                                        "Failed to interpolate field: " + field + " on class: " + cls.getName(), e);

        assertTrue(exception.getStackTrace().length > 0);
    }

    @Test
    public void test_nestedExceptions() {
        // Test nested exceptions
        Exception innerCause = new IllegalArgumentException("Invalid argument");
        Exception middleCause = new RuntimeException("Runtime error", innerCause);
        WebApiException exception = new WebApiException(400, middleCause);

    }

    @Test
    @DisplayName("Constructor: invalid mode throws IllegalArgumentException")
    void constructor_invalidMode_throws() {
        SmbFile file = mock(SmbFile.class);
        assertThrows(IllegalArgumentException.class, () -> new SmbRandomAccessFile(file, "badmode"));
    }

    @Test
    @DisplayName("open(): acquires and releases handle (no I/O)")