public function showHelpPage(Context $context)
 {
     // Description
     echo "\n" . ($context->getDescription() ?: $context->getName()) . "\n\n";
     // Usage
     if (count($context->getUsageDefinitions()) > 0) {
         echo "Usage:\n";
         foreach (array_keys($context->getUsageDefinitions()) as $usage) {
             echo "  {$usage}\n";
         }
         echo "\n";
     }
     // Command Options
     if ($context !== $this->application->getRootContext()) {
         $this->displayOptionsHelp("Command Options:", $context->getOptionDefinitions());
     }
     // Sub Commands
     $this->displaySubCommandHelp($context);
     // Global Options
     $this->displayOptionsHelp("Global Options:", $this->application->getRootContext()->getOptionDefinitions());
 }