code: public QueryResultPage<T> queryPage(DynamoDBQueryExpression<T> queryExpression) {
          return mapper.<T>queryPage(model.targetType(), queryExpression);
      }
docs: Queries an Amazon DynamoDB table and returns a single page of matching
  results.
  @param queryExpression The query expression.
  @return The query results.
  @see com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper#query