Changes to Get session context

added the non-success response with the status 502

added the optional property linkToDocs to the response with the 404 status

added the optional property linkToDocs to the response with the 500 status

added the pattern ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ to the path request parameter id

the response property context/items/params became required for the status 404

the response property context/items/params became required for the status 500

the response property indexedDB/additionalProperties/items/data/items/records/items/key became required for the status 200

the response property indexedDB/additionalProperties/items/data/items/records/items/value became required for the status 200

added the non-success response with the status 404