Limits the number of items the query returns.
The limit() function defines the number of results a query returns in each
page. Only one page of results is retrieved at a time. The next()
and prev() functions are used to
navigate the pages of a query result.
By default, limit is set to 50.
The maximum value that limit() can accept is 1000.
The number of items to return, which is also the pageSize of the results object.