This class holds meta data about the current progress of the source.

A generic object that can hold additional request data

The current http request message used for this request

The current http response message received for this request

Amounts of rows processed in the last request

Number of currently processed items

The number of requests so far

The uri used for the current request

Unparsed meta data from the response. E.g. this could be unparsed json that holds the links to the next page of the response.