<?php

namespace Pvm\ArtisanBeans\Console;

class UnpauseTubeCommand extends PauseTubeCommand
{
    protected $commandName = 'unpause';

    protected $commandArguments = '
        {tube : Tube name}
    ';

    protected $description = 'Upause the tube';

    protected $delay = 0;

    /**
     * {$@inheritdoc}.
     */
    protected function getSuccessMessage($tube)
    {
        return "Tube '$tube' has been unpaused.";
    }

    /**
     *{@inheritdoc}.
     */
    protected function parseCommandArguments()
    {
        // Override parent's parseCommandArguments
        // since we use a predefined value for $this->delay
    }
}

<?php

namespace Pvm\ArtisanBeans\Console;

class UnpauseTubeCommand extends PauseTubeCommand
{
    protected $commandName = 'unpause';

    protected $commandArguments = '
        {tube : Tube name}
    ';

    protected $description = 'Upause the tube';

    protected $delay = 0;

    /**
     * {$@inheritdoc}.
     */
    protected function getSuccessMessage($tube)
    {
        return "Tube '$tube' has been unpaused.";
    }
}

--- 
+++ 
@@ -21,4 +21,13 @@
     {
         return "Tube '$tube' has been unpaused.";
     }
+
+    /**
+     *{@inheritdoc}.
+     */
+    protected function parseCommandArguments()
+    {
+        // Override parent's parseCommandArguments
+        // since we use a predefined value for $this->delay
+    }
 }
Return back parseCommandArguments and add a proper comment.
