above. See [Jetty's overview][jetty_8_252] of the API change and its consequences.

 *  New: `MultipartReader` is a streaming decoder for [MIME multipart (RFC 2045)][rfc_2045]
    messages. It complements `MultipartBody` which is our streaming encoder.

    ```kotlin
    val response: Response = call.execute()
    val multipartReader = MultipartReader(response.body!!)

    multipartReader.use {

      }

      ImmutableRangeSet<Integer> built = builder.build();
      assertEquals(mutable, built);
      assertEquals(ImmutableRangeSet.copyOf(mutable), built);
      assertEquals(mutable.complement(), built.complement());

      for (int i = 0; i <= 11; i++) {
        assertEquals(mutable.contains(i), built.contains(i));
      }

      SerializableTester.reserializeAndAssert(built);

    this(ranges, /* complement= */ null);
  }

  private ImmutableRangeSet(
      ImmutableList<Range<C>> ranges, @Nullable ImmutableRangeSet<C> complement) {
    this.ranges = ranges;
    this.complement = complement;
  }

  private final transient ImmutableList<Range<C>> ranges;
  private final transient @Nullable ImmutableRangeSet<C> complement;

  @Override

      rangeSet.add(range);

      TreeRangeSet<Integer> complement = TreeRangeSet.create();
      complement.add(Range.<Integer>all());
      complement.remove(range);

      assertEquals(complement, rangeSet.complement());
      assertThat(rangeSet.complement().asRanges())
          .containsExactlyElementsIn(complement.asRanges())
          .inOrder();
    }
  }

	return
}

// DecodeMsg implements msgp.Decodable
func (z *ResponseCode) DecodeMsg(dc *msgp.Reader) (err error) {
	{
		var zb0001 uint8
		zb0001, err = dc.ReadUint8()
		if err != nil {
			err = msgp.WrapError(err)
			return
		}
		(*z) = ResponseCode(zb0001)
	}
	return
}

// EncodeMsg implements msgp.Encodable

package cmd

import (
	"github.com/tinylib/msgp/msgp"
)

// DecodeMsg implements msgp.Decodable
func (z *BitrotAlgorithm) DecodeMsg(dc *msgp.Reader) (err error) {
	{
		var zb0001 uint
		zb0001, err = dc.ReadUint()
		if err != nil {
			err = msgp.WrapError(err)
			return
		}
		(*z) = BitrotAlgorithm(zb0001)
	}
	return
}

// EncodeMsg implements msgp.Encodable

	return
}

// DecodeMsg implements msgp.Decodable
func (z *scanStatus) DecodeMsg(dc *msgp.Reader) (err error) {
	{
		var zb0001 uint8
		zb0001, err = dc.ReadUint8()
		if err != nil {
			err = msgp.WrapError(err)
			return
		}
		(*z) = scanStatus(zb0001)
	}
	return
}

// EncodeMsg implements msgp.Encodable
func (z scanStatus) EncodeMsg(en *msgp.Writer) (err error) {

package grid

import (
	"github.com/tinylib/msgp/msgp"
)

// DecodeMsg implements msgp.Decodable
func (z *Flags) DecodeMsg(dc *msgp.Reader) (err error) {
	{
		var zb0001 uint8
		zb0001, err = dc.ReadUint8()
		if err != nil {
			err = msgp.WrapError(err)
			return
		}
		(*z) = Flags(zb0001)
	}
	return
}

// EncodeMsg implements msgp.Encodable
func (z Flags) EncodeMsg(en *msgp.Writer) (err error) {

package cmd

import (
	"github.com/tinylib/msgp/msgp"
)

// DecodeMsg implements msgp.Decodable
func (z *rebalSaveOpts) DecodeMsg(dc *msgp.Reader) (err error) {
	{
		var zb0001 uint8
		zb0001, err = dc.ReadUint8()
		if err != nil {
			err = msgp.WrapError(err)
			return
		}
		(*z) = rebalSaveOpts(zb0001)
	}
	return
}

// EncodeMsg implements msgp.Encodable
func (z rebalSaveOpts) EncodeMsg(en *msgp.Writer) (err error) {

Otherwise, if the nested type requires an implementation class, you'll need to manage the lifecycle of it:
```
interface NestedType {
    Property<String> getSomeProperty()
    void notManaged()
}
abstract class DefaultNestedType implements NestedType {
    ...
}

class Example {
    private final NestedType nested
    Example(ObjectFactory objects) {
       this.nested = objects.newInstance(DefaultNestedType.class)
    }

    @Nested