FileStorageApi.File.upload

You're seeing just the function upload, go back to FileStorageApi.File module for more information.
Link to this function

upload(container_name, filename, blob_name)

Specs

upload(String.t(), String.t(), String.t()) ::
  {:ok, String.t()} | {:file_upload_error, map()}

Function to upload file has input args container_name: name of the container filename: path to the file with the data to store blob_name: how the blob is going to be called after storage

Returns reference to the file in the asset store