assertEquals("Should have 2 payloads", 2, multiAnnotation.payload().length);
        assertEquals("First payload should be TestPayload", TestPayload.class, multiAnnotation.payload()[0]);
        assertEquals("Second payload should be AnotherTestPayload", AnotherTestPayload.class, multiAnnotation.payload()[1]);
    }

    // Test ProtocolType enum values

    val b1 = source.readByte() and 0xff

    val isMasked = b1 and B1_FLAG_MASK != 0
    if (isMasked == isClient) {
      // Masked payloads must be read on the server. Unmasked payloads must be read on the client.
      throw ProtocolException(
        if (isClient) {
          "Server-sent frames must not be masked."
        } else {

        assertEquals("Should have 2 payloads", 2, multiAnnotation.payload().length);
        assertEquals("First payload should be TestPayload", TestPayload.class, multiAnnotation.payload()[0]);
        assertEquals("Second payload should be AnotherTestPayload", AnotherTestPayload.class, multiAnnotation.payload()[1]);
    }

    // Additional test interfaces for multiple groups/payloads test
    private interface AnotherTestGroup {

      } catch (e: IOException) {
        failConnection(e)
      }
    }
  }

  fun writePing(
    reply: Boolean,
    payload1: Int,
    payload2: Int,
  ) {
    try {
      writer.ping(reply, payload1, payload2)
    } catch (e: IOException) {
      failConnection(e)
    }
  }

  /** For testing: sends a ping and waits for a pong. */

  /** Send a ping with the supplied [payload]. */
  @Throws(IOException::class)
  fun writePing(payload: ByteString) {
    writeControlFrame(OPCODE_CONTROL_PING, payload)
  }

  /** Send a pong with the supplied [payload]. */
  @Throws(IOException::class)
  fun writePong(payload: ByteString) {
    writeControlFrame(OPCODE_CONTROL_PONG, payload)
  }

  /**

    // Verify the peer received what was expected.
    val ping = peer.takeFrame()
    assertThat(ping.type).isEqualTo(Http2.TYPE_PING)
    assertThat(ping.streamId).isEqualTo(0)
    assertThat(ping.payload1).isEqualTo(2)
    assertThat(ping.payload2).isEqualTo(3)
    assertThat(ping.ack).isTrue()
  }

  @Test fun peerHttp2ServerLowersInitialWindowSize() {
    val initial = Settings()
    initial[Settings.INITIAL_WINDOW_SIZE] = 1684

    /**
     * The validation groups this constraint belongs to.
     * @return the groups
     */
    Class<?>[] groups() default {};

    /**
     * The payload associated with this constraint.
     * @return the payload
     */
    Class<? extends Payload>[] payload() default {};

    /**
     * Gets the configuration key for the minimum size constraint.
     * @return name of size the element must be higher or equal to
     */

    /**
     * The validation groups this constraint belongs to.
     * @return the groups
     */
    Class<?>[] groups() default {};

    /**
     * The payload associated with this constraint.
     * @return the payload
     */
    Class<? extends Payload>[] payload() default {};

    /**
     * The validation groups.
     *
     * @return the validation groups
     */
    Class<?>[] groups() default {};

    /**
     * The payload for constraint.
     *
     * @return the payload
     */
    Class<? extends Payload>[] payload() default {};

            }

            @Override
            public Class<?>[] groups() {
                return new Class<?>[0];
            }

            @Override
            public Class<? extends Payload>[] payload() {
                return new Class[0];
            }

            @Override
            public String minKey() {
                return "";
            }

            @Override