Conscrypt.isAvailable() && atLeastVersion(2, 1, 0) -> true
          else -> false
        }
      } catch (e: NoClassDefFoundError) {
        false
      } catch (e: ClassNotFoundException) {
        false
      }

    fun buildIfSupported(): ConscryptPlatform? = if (isSupported) ConscryptPlatform() else null

    fun atLeastVersion(
      major: Int,
      minor: Int = 0,

          + ")";
    }

    @GwtIncompatible
    @J2ktIncompatible
        private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
      in.defaultReadObject();
      lock = new Object();
    }

    @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;
  }

  }

  @SuppressWarnings("unchecked") // reading fields populated by writeObject
  @GwtIncompatible // java.io.ObjectInputStream
  private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException {
    stream.defaultReadObject();
    keyTypeOrObjectUnderJ2cl = (Class<K>) requireNonNull(stream.readObject());
    valueTypeOrObjectUnderJ2cl = (Class<V>) requireNonNull(stream.readObject());
    setDelegates(

           *
           * Also, it's nice that this approach should let us catch *only* ClassNotFoundException
           * instead of having to catch more broadly (potentially even including, say, a
           * StackOverflowError).
           */
          Class.forName("java.lang.invoke.VarHandle");
        } catch (ClassNotFoundException beforeJava9) {
          return null;
        }
        return new VarHandleAtomicHelper();

      @Override
      @J2ObjCIncompatible
      @Nullable LittleEndianBytes tryMakeVarHandleLittleEndianBytes() {
        try {
          Class.forName("java.lang.invoke.VarHandle");
        } catch (ClassNotFoundException beforeJava9) {
          return null;
        }
        return VarHandleLittleEndianBytes.INSTANCE;
      }
    };

      return (result == null) ? inverseEntrySet = new InverseEntrySet<K, V>(forward) : result;
    }

    @GwtIncompatible("serialization")
    private void readObject(ObjectInputStream in) throws ClassNotFoundException, IOException {
      in.defaultReadObject();
      this.forward.inverse = this;
    }
  }

  private static final class InverseEntrySet<K extends @Nullable Object, V extends @Nullable Object>

        return Jdk8WithJettyBootPlatform(
          putMethod,
          getMethod,
          removeMethod,
          clientProviderClass,
          serverProviderClass,
        )
      } catch (_: ClassNotFoundException) {
      } catch (_: NoSuchMethodException) {
      }

      return null
    }
  }

        .forAllPublicStaticMethods(Suppliers.class)
        .testNulls();
  }

  @J2ktIncompatible
  @GwtIncompatible // reflection
  @AndroidIncompatible // TODO(cpovirk): ClassNotFoundException: com.google.common.base.Function
  public void testSuppliersSerializable() throws Exception {
    new ClassSanityTester()
        .setDefault(Duration.class, Duration.ofSeconds(1))

        Class<? extends Enum> theClass =
            Class.forName(CLASS_VALUE_VALIDATOR_NAME).asSubclass(Enum.class);
        return (GetCheckedTypeValidator) theClass.getEnumConstants()[0];
      } catch (ClassNotFoundException
          | RuntimeException
          | Error t) { // ensure we really catch *everything*
        return weakSetValidator();
      }
    }
  }

      s.writeDouble(get(i));
    }
  }

  /** Reconstitutes the instance from a stream (that is, deserializes it). */
  private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException {
    s.defaultReadObject();

    int length = s.readInt();
    ImmutableLongArray.Builder builder = ImmutableLongArray.builder();
    for (int i = 0; i < length; i++) {