# properties.numberReturned.description
The number of elements in the collection.

A server may omit this information in a response, if the information
about the number of elements is not known or difficult to compute.

If the value is provided, the value shall be identical to the number
of items in the returned array.

# properties.timeStamp.description
This property indicates the time and date when the response was generated using RFC 3339 notation.