*/
internal sealed class Tags {
  /**
   * Returns a tags instance that maps [key] to [value]. If [value] is null, this returns a tags
   * instance that does not have any mapping for [key].
   */
  abstract fun <T : Any> plus(
    key: KClass<T>,
    value: T?,
  ): Tags

  abstract operator fun <T : Any> get(key: KClass<T>): T?
}

/** An empty tags. This is always the tail of a [LinkedTags] chain. */

     * @return A provider of the reduced value. Non-present if no properties are true.
     */
    fun <T : Any> Project.reduceBooleanFlagValues(flags: Map<Property<Boolean>, T>, combiner: (T, T) -> T): Provider<T> {
        return flags.entries
            .map { entry ->
                entry.key.map {
                    when (it) {
                        true -> Optional.of(entry.value)
                        false -> Optional.empty()

      for (prefixFlag in prefixFlags) {
        FLAGS[prefixFlag or frameFlag] = FLAGS[prefixFlag] + '|'.toString() + FLAGS[frameFlag]
        FLAGS[prefixFlag or frameFlag or FLAG_PADDED] =
          FLAGS[prefixFlag] + '|'.toString() + FLAGS[frameFlag] + "|PADDED"
      }
    }

    for (i in FLAGS.indices) { // Fill in holes with binary representation.
      if (FLAGS[i] == null) FLAGS[i] = BINARY[i]
    }
  }

  /**

      TYPE_DATA -> readData(handler, length, flags, streamId)
      TYPE_HEADERS -> readHeaders(handler, length, flags, streamId)
      TYPE_PRIORITY -> readPriority(handler, length, flags, streamId)
      TYPE_RST_STREAM -> readRstStream(handler, length, flags, streamId)
      TYPE_SETTINGS -> readSettings(handler, length, flags, streamId)
      TYPE_PUSH_PROMISE -> readPushPromise(handler, length, flags, streamId)

    InetAddress client = InetAddresses.forString(clientStr);
    assertThat(teredo.getClient()).isEqualTo(client);

    assertEquals(port, teredo.getPort());
    assertEquals(flags, teredo.getFlags());
  }

  public void testTeredoAddress_nullServer() {
    InetAddresses.TeredoInfo info = new InetAddresses.TeredoInfo(null, null, 80, 1000);

        @Nullable Inet4Address server, @Nullable Inet4Address client, int port, int flags) {
      checkArgument(
          (port >= 0) && (port <= 0xffff), "port '%s' is out of range (0 <= port <= 0xffff)", port);
      checkArgument(
          (flags >= 0) && (flags <= 0xffff),
          "flags '%s' is out of range (0 <= flags <= 0xffff)",
          flags);

      this.server = MoreObjects.firstNonNull(server, ANY4);

            && pattern.flags() == that.pattern.flags();
      }
      return false;
    }

    @Override
    public String toString() {
      String patternString =
          MoreObjects.toStringHelper(pattern)
              .add("pattern", pattern.pattern())
              .add("pattern.flags", pattern.flags())
              .toString();

            && pattern.flags() == that.pattern.flags();
      }
      return false;
    }

    @Override
    public String toString() {
      String patternString =
          MoreObjects.toStringHelper(pattern)
              .add("pattern", pattern.pattern())
              .add("pattern.flags", pattern.flags())
              .toString();

[tool.ruff.lint.pyupgrade]
# Preserve types, even if a file imports `from __future__ import annotations`.
keep-runtime-typing = true

[tool.inline-snapshot]
# default-flags=["fix"]

## Context

[Gradle properties](https://docs.gradle.org/current/userguide/build_environment.html#sec:gradle_configuration_properties)
are flags that allow build engineers to opt into and out of features of Gradle Runtime or Core Plugins.
Practically every Gradle feature is behind a flag, and additional sub-flags or options provide further control.