public GlobalSecondaryIndexDescription withItemCount(Long itemCount) {
        setItemCount(itemCount);
        return this;
    }
<p>
The number of items in the specified index. DynamoDB updates this value approximately every six hours. Recent
changes might not be reflected in this value.
</p>

@param itemCount
       The number of items in the specified index. DynamoDB updates this value approximately every six hours.
       Recent changes might not be reflected in this value.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-dynamodb/src/main/java/com/amazonaws/services/dynamodbv2/model/GlobalSecondaryIndexDescription.java