BitSetProducer (elasticsearch-extend 3.2 API)

```
public interface BitSetProducer
```
A producer of BitSets per segment.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`BitSet`	`getBitSet(LeafReaderContext context)`	Produce a `BitSet` matching the expected documents on the given segment.

- Method Detail
  - getBitSet
```
BitSet getBitSet(LeafReaderContext context)
          throws IOException
```
    Produce a BitSet matching the expected documents on the given segment. This may return null if no documents match.
    
    Throws:
    
    IOException