RSocketRequester.MetadataSpec (Spring Framework 5.2.12.RELEASE API)

类型参数:
S - a self reference to the spec type
所有已知子接口:
RSocketRequester.RequestSpec
封闭接口:
RSocketRequester
```
public static interface RSocketRequester.MetadataSpec<S extends RSocketRequester.MetadataSpec<S>>
```
Spec for providing additional composite metadata entries.

- 方法概要
  所有方法实例方法抽象方法
  修饰符和类型方法说明
  S metadata(Object metadata, MimeType mimeType)
  Use this to append additional metadata entries when using composite metadata.

- 方法详细资料
  - metadata
```
S metadata(Object metadata,
           MimeType mimeType)
```
    Use this to append additional metadata entries when using composite metadata. An IllegalArgumentException is raised if this method is used when not using composite metadata. The metadata value be a concrete value or any producer of a single value that can be adapted to a Publisher via ReactiveAdapterRegistry.
    参数:
    metadata - an Object to be encoded with a suitable Encoder, or a DataBuffer
    mimeType - the mime type that describes the metadata