SubmitRule (Gerrit Review Plugin API Documentation)

All Known Implementing Classes:

DefaultSubmitRule, IgnoreSelfApprovalRule, PrologRule
```
public interface SubmitRule
```
Allows plugins to decide whether a change is ready to be submitted or not.
For a given ChangeData, each plugin is called and returns a Optional of SubmitRecord.
A Change can only be submitted if all the plugins give their consent.
Each SubmitRecord represents a decision made by the plugin. If the plugin rejects a change, it should hold valuable informations to help the end user understand and correct the blocking points.
It should be noted that each plugin can handle rules inheritance.
This interface should be used to write pre-submit validation rules. This includes both simple checks, coded in Java, and more complex fully fledged expression evaluators (think: Prolog, JavaCC, or even JavaScript rules).

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Optional<SubmitRecord>`	`evaluate(ChangeData changeData)`	Returns a `Optional` of `SubmitRecord` status for the change.

- Method Detail
  - evaluate
```
Optional<SubmitRecord> evaluate(ChangeData changeData)
```
    Returns a Optional of SubmitRecord status for the change. Optional#empty() if the SubmitRule was a no-op.