code: public EnvelopeTemplate get(String accountId, String templateId) throws ApiException {
      return get(accountId, templateId, null);
    }
docs: Gets a list of templates for a specified account.
  Retrieves the definition of 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)
  @return EnvelopeTemplate