@Override
    public String toString() {
        return this.value;
    }
<p>
Describes the condition of a file transfer protocol-enabled server with respect to its ability to perform file
operations. There are six possible states: <code>OFFLINE</code>, <code>ONLINE</code>, <code>STARTING</code>,
<code>STOPPING</code>, <code>START_FAILED</code>, and <code>STOP_FAILED</code>.
</p>
<p>
<code>OFFLINE</code> indicates that the server exists, but that it is not available for file operations.
<code>ONLINE</code> indicates that the server is available to perform file operations. <code>STARTING</code>
indicates that the server's was instantiated, but the server is not yet available to perform file operations. Under
normal conditions, it can take a couple of minutes for the server to be completely operational. Both
<code>START_FAILED</code> and <code>STOP_FAILED</code> are error conditions.
</p>
aws-java-sdk-transfer/src/main/java/com/amazonaws/services/transfer/model/State.java