docs: public static BoxLegalHoldAssignment.Info create(BoxAPIConnection api,
                                                       String policyID, String resourceType, String resourceID) {
          URL url = ASSIGNMENTS_URL_TEMPLATE.build(api.getBaseURL());
          BoxJSONRequest request = new BoxJSONRequest(api, url, "POST");
  
          JsonObject requestJSON = new JsonObject()
                  .add("policy_id", policyID)
                  .add("assign_to", new JsonObject()
                          .add("type", resourceType)
                          .add("id", resourceID));
          request.setBody(requestJSON.toString());
          BoxJSONResponse response = (BoxJSONResponse) request.send();
          JsonObject responseJSON = JsonObject.readFrom(response.getJSON());
          BoxLegalHoldAssignment createdAssignment = new BoxLegalHoldAssignment(api, responseJSON.get("id").asString());
          return createdAssignment.new Info(responseJSON);
      }