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.
Generated using TypeDoc
GridFSBucketOpenUploadStreamOptions.
https://mongodb.github.io/node-mongodb-native/2.1/api/GridFSBucket.html#openUploadStream