get https://sandbox.healthgorilla.com/fhir/R4/Patient//$export-ccda
You can export patient's full medical history as a single C-CDA document.
You can specify the client timezone by passing it in the ‘tz’ attribute.
The result contains a link to a binary resource (CCD XML) that can be downloaded.
This operations can take a long time to complete, therefore it must be performed asynchronously.