public String getRegionName() {
        return this.regionName;
    }
<p>
The source Amazon Web Services Region name. For example, <code>us-east-1</code>.
</p>
<p>
Constraints:
</p>
<ul>
<li>
<p>
Must specify a valid Amazon Web Services Region name.
</p>
</li>
</ul>

@return The source Amazon Web Services Region name. For example, <code>us-east-1</code>.</p>
        <p>
        Constraints:
        </p>
        <ul>
        <li>
        <p>
        Must specify a valid Amazon Web Services Region name.
        </p>
        </li>
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/DescribeSourceRegionsRequest.java