platform.assumeJdk9()
    val applicationProtocolUnsupported =
      object : DelegatingSSLSocket(null) {
        override fun getApplicationProtocol(): String {
          throw UnsupportedOperationException("Mock exception")
        }
      }
    assertThat(Jdk9Platform().getSelectedProtocol(applicationProtocolUnsupported)).isNull()
  }

        .addHeader("Accept", "application/vnd.github.v3+json")
        .build();

    try (Response response = client.newCall(request).execute()) {
      if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);

      System.out.println("Server: " + response.header("Server"));
      System.out.println("Date: " + response.header("Date"));

      ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(bytes.toByteArray()));
      return (T) requireNonNull(in.readObject());
    } catch (IOException | ClassNotFoundException e) {
      throw new RuntimeException(e);
    }
  }

  private Platform() {}

    public static JarFile getJarFile(final JarURLConnection conn) {
        assertArgumentNotNull("conn", conn);

        try {
            return conn.getJarFile();
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    }


    @Override
    int readTrailerWireFormat ( InputStream in, byte[] buffer, int bufferIndex ) throws IOException {
        if ( in.read(buffer, bufferIndex, this.length) != this.length ) {
            throw new IOException("unexpected EOF reading netbios retarget session response");
        }
        int addr = readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        new NbtAddress(null, addr, false, NbtAddress.B_NODE);

    @Override
    public String toString() {
      return "CountingSupplier";
    }
  }

  static class ThrowingSupplier implements Supplier<Integer> {
    @Override
    public Integer get() {
      throw new NullPointerException();
    }
  }

  static class SerializableCountingSupplier extends CountingSupplier implements Serializable {
    private static final long serialVersionUID = 0L;
  }

    @Override
    public String toString() {
      return "CountingSupplier";
    }
  }

  static class ThrowingSupplier implements Supplier<Integer> {
    @Override
    public Integer get() {
      throw new NullPointerException();
    }
  }

  static class SerializableCountingSupplier extends CountingSupplier implements Serializable {
    private static final long serialVersionUID = 0L;
  }

  }

  private void assertSetCountNegativeOldCount() {
    try {
      getMultiset().setCount(e3(), -1, 1);
      fail("calling setCount() with a negative oldCount should throw IllegalArgumentException");
    } catch (IllegalArgumentException expected) {
    }
  }

  // Negative oldCount.

  @CollectionFeature.Require(SUPPORTS_ADD)

  public void testRemoveIf_unsupportedEmptyCollection() {
    try {
      assertFalse(
          "removeIf(Predicate) should return false or throw " + "UnsupportedOperationException",
          collection.removeIf(
              x -> {
                throw new AssertionError("predicate should never be called");
              }));
    } catch (UnsupportedOperationException tolerated) {
    }
    expectUnchanged();
  }

   */
  static void assertBasicUrlEscaperExceptPercent(UnicodeEscaper e) {
    // URL escapers should throw null pointer exceptions for null input
    try {
      e.escape((String) null);
      fail("Escaping null string should throw exception");
    } catch (NullPointerException x) {
      // pass
    }

    // All URL escapers should leave 0-9, A-Z, a-z unescaped