# getDocumentIssuingDate method

DateTime? getDocumentIssuingDate()

Gets the the document issuing date.

return The document issuing date. throws BiosealException An error has occurred during Bioseal Library execution.

## Implementation

    DateTime? getDocumentIssuingDate() {
      DateTime documentIssuingDate = DateTime();
      var err = biosealSDK.id3Bioseal_GetDocumentIssuingDate(_pHandle.value, documentIssuingDate.handle);
      if (err == BiosealError.objectDoesNotExist.value) {
        documentIssuingDate.dispose();
        return null;
      }
      if (err != BiosealError.success.value) {
        documentIssuingDate.dispose();
        throw BiosealException(err);
      }
      return documentIssuingDate;
    }