addFlag method
Add a flag (boolean option, --flag or -f)
Implementation
CommandBuilder addFlag(
String name, {
String? abbr,
String? help,
bool defaultValue = false,
}) {
_parser.addFlag(
name,
abbr: abbr,
help: help,
defaultsTo: defaultValue,
);
_defaults[name] = defaultValue;
return this;
}