title: DynamoDB Java AWS SDK - UpdateItem simplification possible?
body: <p>I am new to using AWS and am writing something that will add an attribute to the provided item given some keyAttributes. I got it working, but the code I ended up writing just looks unintuitive and silly to me. (I just based it off of documentation I've been finding online.) </p>
  
  <p>I was able to do a successful basic update of an item in a dynamoDB table with this code:</p>
  
  <pre><code>final AttributeValue fulfilled = new AttributeValue().withBOOL(true);
  
  final UpdateItemRequest updateItemRequest = new UpdateItemRequest()
       .withTableName(tableName)
       .withKey(keyAttributes)
       .withUpdateExpression("SET fulfilled = :fulfilled")
       .withExpressionAttributeValues(ImmutableMap.of(":fulfilled", fulfilled));
  
  final UpdateItemResult result = dynamoClient.updateItem(updateItemRequest);
  </code></pre>
  
  <p>Is there anything I can do to cut it down to just the barebones thing I'm trying to do here: just adding a new attribute "fulfilled" to an item, set to true? </p>