public Long getItemCount() {
        return this.itemCount;
    }
<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>

@return 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.
aws-java-sdk-dynamodb/src/main/java/com/amazonaws/services/dynamodbv2/model/GlobalSecondaryIndexDescription.java