}
        if (keyObj instanceof final Number key) {
            return key.toString();
        }
        return "-";
    }

    /**
     * Generates a cache key from a crawler object.
     *
     * @param keyObj the crawler object to generate key for
     * @return Optional cache key string, empty if object type not supported
     */
    protected OptionalThing<String> getCacheKey(final Object keyObj) {

	}
}

func (in *Input) Next() ScanToken {
	if in.peek {
		in.peek = false
		tok := in.peekToken
		in.text = in.peekText
		return tok
	}
	// If we cannot generate a token after 100 macro invocations, we're in trouble.
	// The usual case is caught by Push, below, but be safe.
	for nesting := 0; nesting < 100; {
		tok := in.Stack.Next()
		switch tok {
		case '#':

		return nil
	}
	return s.err
}

// Bytes returns the most recent token generated by a call to [Scanner.Scan].
// The underlying array may point to data that will be overwritten
// by a subsequent call to Scan. It does no allocation.
func (s *Scanner) Bytes() []byte {
	return s.token
}

// Text returns the most recent token generated by a call to [Scanner.Scan]
// as a newly allocated string holding its bytes.

    return immutableCell(cell.getColumnKey(), cell.getRowKey(), cell.getValue());
  }

  /**
   * Creates a table that uses the specified backing map and factory. It can generate a table based
   * on arbitrary {@link Map} classes.
   *
   * <p>The {@code factory}-generated and {@code backingMap} classes determine the table iteration
   * order. However, the table's {@code row()} method returns instances of a different class than

          Set<Type> combined = new LinkedHashSet<>(asList(upperBounds));
          // Since this is an artificially generated type variable, we don't bother checking
          // subtyping between declared type bound and actual type bound. So it's possible that we
          // may generate something like <capture#1-of ? extends Foo&SubFoo>.
          // Checking subtype between declared and actual type bounds

    void testSetupMojoExecution() throws Exception {
        File pom = getProject("mojo-configuration");

        MavenSession session = createMavenSession(pom);

        LifecycleTask task = new LifecycleTask("generate-sources");
        MavenExecutionPlan executionPlan = lifeCycleExecutionPlanCalculator.calculateExecutionPlan(
                session, session.getCurrentProject(), Arrays.asList(task), false);

   *         .buildOrThrow();
   * }
   *
   * <p>For <i>small</i> immutable bimaps, the {@code ImmutableBiMap.of()} methods are even more
   * convenient.
   *
   * <p>By default, a {@code Builder} will generate bimaps that iterate over entries in the order
   * they were inserted into the builder. For example, in the above example, {@code
   * WORD_TO_INT.entrySet()} is guaranteed to iterate over the entries in the order {@code "one"=1,

   * multimap based on arbitrary {@link Map} and {@link List} classes. Most users should prefer
   * {@link MultimapBuilder}, though a small number of users will need this method to cover map or
   * collection types that {@link MultimapBuilder} does not support.
   *
   * <p>The {@code factory}-generated and {@code map} classes determine the multimap iteration

   *     .omitNullValues()
   *     .add("x", 1)
   *     .add("y", null)
   *     .toString();
   * }
   *
   * <p>Note that in GWT, class names are often obfuscated.
   *
   * @param self the object to generate the string for (typically {@code this}), used only for its
   *     class name
   * @since 18.0 (since 2.0 as {@code Objects.toStringHelper()}).
   */
  public static ToStringHelper toStringHelper(Object self) {

database (you can learn more about SQL primary keys in the SQLModel docs).

    **Note:** We use `int | None` for the primary key field so that in Python code we can *create an object without an `id`* (`id=None`), assuming the database will *generate it when saving*. SQLModel understands that the database will provide the `id` and *defines the column as a non-null `INTEGER`* in the database schema. See <a href="https://sqlmodel.tiangolo.com/tutorial/create-db-and-table/#primary-key-id" class="external-link"...