code: public byte[] getCommentsTranscript(String accountId, String envelopeId) throws ApiException {
      return getCommentsTranscript(accountId, envelopeId, null);
    }
docs: Gets comment transcript for envelope and user
  
  @param accountId The external account number (int) or account ID Guid. (required)
  @param envelopeId The envelopeId Guid of the envelope being accessed. (required)
  @return byte[]