This is a private Google API client used by one person, Ishan Chhabra, to work with his own Google accounts from the command line. It runs the open-source gog tool on his own computers to read and edit his Drive files, Docs, Sheets, Slides, Forms, Gmail, Calendar, Contacts and Tasks.
It is not a public product and is not offered to anyone else. Questions can be sent to ishan.chhabra@gmail.com.