Enum holding possible states of the import operation.
Values:
IMPORT_STATE_UNSPECIFIED (0):
Default value. This value is unused.
IMPORT_QUEUED (1):
The dump with entries has been queued for
import.
IMPORT_IN_PROGRESS (2):
The import of entries is in progress.
IMPORT_DONE (3):
The import of entries has been finished.
IMPORT_OBSOLETE (4):
The import of entries has been abandoned in
favor of a newer request.
