Extract portfolio at a Sensible URL

Use this endpoint with multiple documents that are packaged into one PDF file (a PDF "portfolio").
Segments a PDF into the specified document types (for example, 1099, w2, and bank_statement) and then runs extractions
asynchronously for each document Sensible finds in the PDF portfolio. Take the following steps -

1. Use this endpoint to generate a Sensible URL.
2. PUT the PDF you want to extract data from at the URL, where SENSIBLE_UPLOAD_URL is the URL you received
   from this endpoint's response. For more information about how to PUT the document, see the generate_upload_url/{document_type} endpoint.
3. To retrieve the extraction, use a webhook, or use the extraction id returned in the response to poll the GET documents/{id} endpoint.
   For more about extracting from PDF portfolios, see Extracting from document portfolios.