View Sourcemodule selenium-webdriver/io/execSpawns a child process. The returned Command may be used to wait for the process result or to send signals to the process.exec(command, opt_options)ParameterscommandstringThe executable to spawn.opt_options{args: (Array<string>|undefined), env: (Object<string, string>|undefined), stdio: (string|Array<?(string|number|Stream)>|undefined)}=The command options.Returns$jscomp.scope.Command$1The launched command.