public void setSource(Long source) {
        this.source = source;
    }
<p>
The size of a file in the source of a merge or pull request.
</p>

@param source
       The size of a file in the source of a merge or pull request.
aws-java-sdk-codecommit/src/main/java/com/amazonaws/services/codecommit/model/FileSizes.java