FileImportState type  
Defines values for FileImportState. 
KnownFileImportState can be used interchangeably with FileImportState,
this enum contains the known values that the service supports.
Known values supported by the service
FatalError: A fatal error has occurred while ingesting the file. 
Ingested: The file has been ingested. 
IngestedWithErrors: The file has been ingested with errors. 
InProgress: The file ingestion is in progress. 
Invalid: The file is invalid. 
WaitingForUpload: Waiting for the file to be uploaded. 
Unspecified: Unspecified state.
type FileImportState = string