void warn(string $string) Write a string as warning output.

void error(string $string) Write a string as error output.

void comment(string $string) Write a string as comment output.

void line(string $string) Write a string as standard output.

void error(string $string, null|int|string $verbosity = null) Write a string

TestMakeCommand class TestMakeCommand extends

OutputInterface getOutput() Get the output implementation.

string|array option(string $key = null) Get the value of a command option

string|array argument(string $key = null) Get the value of a command argument

bool hasArgument(string|int $name) Determine if the given argument is present