StepContributionSource (Spring Batch 4.1.4.RELEASE API)

All Known Implementing Classes:
ChunkMessageChannelItemWriter
```
public interface StepContributionSource
```
A source of StepContribution instances that can be aggregated and used to update an ongoing StepExecution.
Author:
Dave Syer

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.util.Collection<StepContribution>`	`getStepContributions()`	Get the currently available contributions and drain the source.

- Method Detail
  - getStepContributions
```
java.util.Collection<StepContribution> getStepContributions()
```
    Get the currently available contributions and drain the source. The next call would return an empty collection, unless new contributions have arrived.
    Returns:
    a collection of StepContribution instances