Hi, I'm working on a console application that deals with options registered as InputOption::VALUE_IS_ARRAY, but when I call $input->setOptions('my-option', ['value1', 'value2']) during initialization/validation my IDE complains about the second argument not matching the documentation (string|bool). The same applies to the setArgument($name, $value) method which is set to string only.

Since I might have array values for both options and arguments, should it be included into the documentation? Is it right to set array values for options/arguments in a this way?

Here is my proposal for the doc update: (I don't know if "array" is better than "string[]" here...)

    // File: symfony/console/Input/InputInterface.php

    // ...

    /**
     * Sets an argument value by name.
     *
     * @param string          $name  The argument name
     * @param string|string[] $value The argument value
     *
     * @throws InvalidArgumentException When argument given doesn't exist
     */
    public function setArgument($name, $value);

    // ...

    /**
     * Sets an option value by name.
     *
     * @param string               $name  The option name
     * @param string|string[]|bool $value The option value
     *
     * @throws InvalidArgumentException When option given doesn't exist
     */
    public function setOption($name, $value);

    // ...

Thank you for your time, please let me know if you want me to send a pull request for this.