public DynamoDBAction withOperation(String operation) {
        setOperation(operation);
        return this;
    }
<p>
The type of operation to be performed. This follows the substitution template, so it can be
<code>${operation}</code>, but the substitution must result in one of the following: <code>INSERT</code>,
<code>UPDATE</code>, or <code>DELETE</code>.
</p>

@param operation
       The type of operation to be performed. This follows the substitution template, so it can be
       <code>${operation}</code>, but the substitution must result in one of the following: <code>INSERT</code>,
       <code>UPDATE</code>, or <code>DELETE</code>.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-iot/src/main/java/com/amazonaws/services/iot/model/DynamoDBAction.java