public MergeOperations withSource(ChangeTypeEnum source) {
        this.source = source.toString();
        return this;
    }
<p>
The operation (add, modify, or delete) on a file in the source of a merge or pull request.
</p>

@param source
       The operation (add, modify, or delete) on a file in the source of a merge or pull request.
@return Returns a reference to this object so that method calls can be chained together.
@see ChangeTypeEnum
aws-java-sdk-codecommit/src/main/java/com/amazonaws/services/codecommit/model/MergeOperations.java