Labels for the file, can be used to store metadata
Labels should be in the format of key=value pairs, e.g. key1=value1; or
as a JSON object.
For adding multiple labels, use different form-data fields with the same
key.
Example:
POST /documents/v1/files
Content-Type: multipart/form-data; boundary=----boundary
------boundary
Content-Disposition: form-data; name="labels"
owner=JohnDoe
------boundary
Content-Disposition: form-data; name="labels"
project=Tensorlake
Labels can also be provided as a JSON object:
------boundary
Content-Disposition: form-data; name="labels"
{"owner": "JohnDoe", "project": "Tensorlake"}
Labels are optional and can be used to store additional information
about the file.