Optional: overwrite this bucket's chunkSizeBytes for this file
Optional: object to store in the file document's metadata field
Optional: string to store in the file document's contentType field
Optional: array of strings to store in the file document's aliases field
Optional: array of strings to store in the file document's aliases field
Optional: overwrite this bucket's chunkSizeBytes for this file
Optional: string to store in the file document's contentType field
Optional: object to store in the file document's metadata field
GridFS Bucket Upload Stream Options