FieldsExtractor (GAX (Google Api eXtensions) for Java (HTTP JSON) 0.111.0 API)

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface FieldsExtractor<RequestT,ParamsT>
```
A functional interface to be implemented for each request message to extract specific fields from it. For advanced usage only.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  ParamsT extract(RequestT request)

- Method Detail
  - extract
```
ParamsT extract(RequestT request)
```