Returns active shared desktop-browser and mobile-device environments
that have capabilities for the selected testing type. Omit type to
request both automation and manual capabilities; entries missing either
capability group are then excluded. This is not the union of both catalogs.

Use available=false and includePrivate=false for the shared catalog
covered here. The values in this reference describe that use case, not
a restriction on other values accepted by the service. A catalog entry
is not a reservation or a guarantee of immediate execution capacity.

The response contains items, without a total or continuation token.
The service reads the first 5000 matching catalog records before
capability filtering; pageToken and size are not working pagination
controls and do not select another page or limit the returned items.