ExtensionCommand constructor
ExtensionCommand()
Xtension
Implementation
ExtensionCommand() {
argParser.addOption("name",
callback: (v) => inputName = className = v,
help: "please enter the class name correctly");
argParser.addOption("file",
callback: (v) => fileName = v,
help: "please enter the file name correctly");
argParser.addOption("dir",
callback: (v) => dirName = v,
help: "please enter the directory name correctly");
argParser.addFlag("rewrite",
callback: (value) => rewrite = value, defaultsTo: false);
}