public Source withS3(S3Source s3) {
        setS3(s3);
        return this;
    }
<p>
The <code>S3Source</code> object.
</p>

@param s3
       The <code>S3Source</code> object.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-signer/src/main/java/com/amazonaws/services/signer/model/Source.java