Classes/Console/Command/InstallCommandController.php
private function executeActionWithArguments($actionName, array $arguments = [], $dryRun = false)
    {
        $this->outputLine(serialize($this->installStepActionExecutor->executeActionWithArguments($actionName, $arguments, $dryRun)));
    }
private function executeActionWithArguments($actionName, array $arguments = [], $dryRun = false)
    {
        $this->outputLine(serialize($this->installStepActionExecutor->executeActionWithArguments($actionName, $arguments, $dryRun)));
    }
Executes the given action and outputs the serialized result messages

@param string $actionName Name of the install step
@param array $arguments Arguments for the install step
@param bool $dryRun If true, do not execute the action, but only check if execution is necessary