Signals Notebook: How to use the asynchronous PDF export in the API

Asynchronous export is useful when exporting an experiment to PDF that is large or consistently has timeout problems, it can also help when organizing bulk data exports.

Steps: The following steps describe how to manually use the feature from the Signals Notebook Swagger test page:

1.Log into Signals Notebook as an administrator
2.Navigate to the experiment and obtain its eid from the URL
3.Navigate to Signals Configuration > System Settings > API Key
4.Click on 'Open External API Document'
5.Expand the 'Entities' section
6.Scroll to the PUT /entities/export/pdf endpoint
   6.1.Click 'Try it out'
   6.2.In the eid box paste the previously obtained eid
   6.3.Click 'Execute'
   6.4.From the ‘Response body’ section copy the fileid
7.Scroll to HEAD /entities/export/pdf/{fileid} endpoint
   7.1.Click 'Try it out'
   7.2.In the fileid box paste the previously obtained fileid
   7.3.Click 'Execute'
   7.4.Check content-length in the response header:
          - If the result is '0' then repeat Step 7.3 after a few seconds
          - If the result is a value different from 0 go to Step 8
8.Scroll to GET /entities/export/pdf/{fileId}
    8.1.Click 'Try it out'
    8.2.In the fileid box paste the previously obtained fileid
    8.3.Click 'Execute'
    8.4.Click 'Download file' to download