getParser method
ArgParser
getParser()
Implementation
ArgParser getParser() {
var parser = ArgParser();
parser.addOption('file_path',
abbr: 'p', help: '.keys or .zip file path which contains keys');
parser.addOption('from_response', abbr: 'r', help: 'from:@atSign response');
parser.addOption('aes_key',
abbr: 'a', help: 'aes key file path', defaultsTo: '');
return parser;
}