Debug returns true if DRIVE_DEBUG is set in the environment.

FDebugPrintf will only print output to the out writer if environment variable `DRIVE_DEBUG` is set.

OAuth 2.0 access type for offline/refresh access.

Google Drive entry point.

Google Drive webpage host.

OAuth 2.0 full Drive scope used for authorization.

Since we'll be sharing `TypeMask` with other bit flags we'll need to avoid collisions with other args.

Arbitrary value.

MaxFileSize is the max number of bytes we can accept for diffing (Arbitrary value).

OAuth 2.0 OOB redirect URL for authorization.

Arbitrary value.

ErrRejectedTerms is empty "" because messages might be too verbose to affirm a rejection that a user has already seen.