BatchingDescriptor (GAX (Google Api eXtensions) for Java (Core) 2.25.0 API)

```
public interface BatchingDescriptor<RequestT,ResponseT>
```
Interface which represents an object that transforms request/response data for the purposes of batching.
Implementations of BatchingDescriptor must guarantee that all methods are stateless and thread safe.
This class is designed to be used by generated code.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`long`	`countBytes(RequestT request)`	Returns the size in bytes of this request.
`long`	`countElements(RequestT request)`	Returns the number of elements contained in this request.
`PartitionKey`	`getBatchPartitionKey(RequestT request)`	Returns the value of the partition key for the given request.
`RequestBuilder<RequestT>`	`getRequestBuilder()`	Get the Builder object for the request type RequestT.
`void`	`splitException(Throwable throwable, Collection<? extends BatchedRequestIssuer<ResponseT>> batch)`	Splits the exception that resulted from a batched call into an individual setException call on each RequestIssuer.
`void`	`splitResponse(ResponseT batchResponse, Collection<? extends BatchedRequestIssuer<ResponseT>> batch)`	Splits the result from a batched call into an individual setResponse call on each RequestIssuer.

- Method Detail
  - getBatchPartitionKey
```
PartitionKey getBatchPartitionKey(RequestT request)
```
    Returns the value of the partition key for the given request.
  - getRequestBuilder
```
RequestBuilder<RequestT> getRequestBuilder()
```
    Get the Builder object for the request type RequestT.
  - splitResponse
```
void splitResponse(ResponseT batchResponse,
                   Collection<? extends BatchedRequestIssuer<ResponseT>> batch)
```
    Splits the result from a batched call into an individual setResponse call on each RequestIssuer.
  - splitException
```
void splitException(Throwable throwable,
                    Collection<? extends BatchedRequestIssuer<ResponseT>> batch)
```
    Splits the exception that resulted from a batched call into an individual setException call on each RequestIssuer.
  - countElements
```
long countElements(RequestT request)
```
    Returns the number of elements contained in this request.
  - countBytes
```
long countBytes(RequestT request)
```
    Returns the size in bytes of this request.