public String getRegion() {
        return region;
    }
Gets the region where the bucket is located.
It will return <code>null</code> for bucket instances created by the
{@link com.amazonaws.services.s3.AmazonS3#createBucket(CreateBucketRequest)} or
{@link com.amazonaws.services.s3.AmazonS3#createBucket(String)} API.

@return The region of this bucket.
aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/model/Bucket.java