this.backingMap = backingMap;
    this.factory = factory;
  }

  // Accessors

  @Override
  public boolean contains(@Nullable Object rowKey, @Nullable Object columnKey) {
    return rowKey != null && columnKey != null && super.contains(rowKey, columnKey);
  }

  @Override
  public boolean containsColumn(@Nullable Object columnKey) {
    if (columnKey == null) {
      return false;
    }

  /**
   * Returns {@code true} if the table contains a mapping with the specified row and column keys.
   *
   * @param rowKey key of row to search for
   * @param columnKey key of column to search for
   */
  boolean contains(
      @CompatibleWith("R") @Nullable Object rowKey,
      @CompatibleWith("C") @Nullable Object columnKey);

  /**
   * Returns {@code true} if the table contains a mapping with the specified row key.
   *

        documents.add(doc);

        final String result = client.testBuildContext(documents);
        assertTrue(result.contains("Hello world"));
        assertFalse(result.contains("<p>"));
        assertFalse(result.contains("<b>"));
        assertFalse(result.contains("</b>"));
        assertFalse(result.contains("</p>"));
    }

    @Test
    public void test_buildContext_stripsHtmlTagsFromDescription() {

        // Assert it's an interface and extends the right superinterface
        assertTrue(clazz.isInterface(), "Should be an interface");
        assertTrue(Arrays.asList(clazz.getInterfaces()).contains(SmbResourceLocator.class), "Should extend SmbResourceLocator");

        // shouldForceSigning(): boolean, no params, no checked exceptions
        Method m1 = clazz.getMethod("shouldForceSigning");

        // Assert
        assertEquals(2283323396289696982L, value, "serialVersionUID should be stable");
    }

    // Behavior check: toString contains class name and message when present
    @Test
    @DisplayName("toString contains class name and message when provided")
    void toString_containsClassName_and_Message() {
        // Arrange
        String msg = "signature invalid";

        assertEquals(cause, exception.getCause());
        // When constructed with cause only, message contains the cause's toString()
        assertTrue(exception.getMessage().contains(cause.getClass().getName()));
        assertTrue(exception.getMessage().contains("Cause exception"));
    }

    @Test
    public void test_constructor_withNullMessage() {
        // Test constructor with null message

              + "equal to the hash (2) of TestObject{group=1, item=2} [group 1, item 2]";
      if (!expected.getMessage().contains(expectedMessage)) {
        fail("<" + expected.getMessage() + "> expected to contain <" + expectedMessage + ">");
      }
      return;
    }
    fail();
  }

  /** An object with a friendly {@link #toString()}. */

              + "equal to the hash (2) of TestObject{group=1, item=2} [group 1, item 2]";
      if (!expected.getMessage().contains(expectedMessage)) {
        fail("<" + expected.getMessage() + "> expected to contain <" + expectedMessage + ">");
      }
      return;
    }
    fail();
  }

  /** An object with a friendly {@link #toString()}. */

                }
                if (url.contains("plugin/repo1")) {
                    try (InputStream is = ResourceUtil.getResourceAsStream(url)) {
                        return new String(InputStreamUtil.getBytes(is), Constants.UTF_8);
                    } catch (IOException e) {
                        throw new IORuntimeException(e);
                    }
                } else if (url.contains("plugin/repo2")) {

    }

    @Override
    public boolean remove(@Nullable Object object) {
      /*
       * `o instanceof Entry` is guaranteed by `contains`, but we check it here to satisfy our
       * nullness checker.
       */
      if (!esDelegate.contains(object) || !(object instanceof Entry)) {
        return false;
      }

      Entry<?, ?> entry = (Entry<?, ?>) object;