public void setReturnValues(String returnValues) {
        this.returnValues = returnValues;
    }
<p>
Use <code>ReturnValues</code> if you want to get the item attributes as they appeared before they were deleted.
For <code>DeleteItem</code>, the valid values are:
</p>
<ul>
<li>
<p>
<code>NONE</code> - If <code>ReturnValues</code> is not specified, or if its value is <code>NONE</code>, then
nothing is returned. (This setting is the default for <code>ReturnValues</code>.)
</p>
</li>
<li>
<p>
<code>ALL_OLD</code> - The content of the old item is returned.
</p>
</li>
</ul>
<p>
There is no additional cost associated with requesting a return value aside from the small network and processing
overhead of receiving a larger response. No read capacity units are consumed.
</p>
<note>
<p>
The <code>ReturnValues</code> parameter is used by several DynamoDB operations; however, <code>DeleteItem</code>
does not recognize any values other than <code>NONE</code> or <code>ALL_OLD</code>.
</p>
</note>

@param returnValues
       Use <code>ReturnValues</code> if you want to get the item attributes as they appeared before they were
       deleted. For <code>DeleteItem</code>, the valid values are:</p>
       <ul>
       <li>
       <p>
       <code>NONE</code> - If <code>ReturnValues</code> is not specified, or if its value is <code>NONE</code>,
       then nothing is returned. (This setting is the default for <code>ReturnValues</code>.)
       </p>
       </li>
       <li>
       <p>
       <code>ALL_OLD</code> - The content of the old item is returned.
       </p>
       </li>
       </ul>
       <p>
       There is no additional cost associated with requesting a return value aside from the small network and
       processing overhead of receiving a larger response. No read capacity units are consumed.
       </p>
       <note>
       <p>
       The <code>ReturnValues</code> parameter is used by several DynamoDB operations; however,
       <code>DeleteItem</code> does not recognize any values other than <code>NONE</code> or <code>ALL_OLD</code>
       .
       </p>
@see ReturnValue
aws-java-sdk-dynamodb/src/main/java/com/amazonaws/services/dynamodbv2/model/DeleteItemRequest.java