code: public byte[] getDocumentPageImage(String accountId, String templateId, String documentId, String pageNumber) throws ApiException {
      return getDocumentPageImage(accountId, templateId, documentId, pageNumber, null);
    }
docs: Gets a page image from a template for display.
  Retrieves a page image for display from the specified template.
  @param accountId The external account number (int) or account ID Guid. (required)
  @param templateId The ID of the template being accessed. (required)
  @param documentId The ID of the document being accessed. (required)
  @param pageNumber The page number being accessed. (required)
  @return byte[]