--- /dev/null
+<?php
+namespace Consolidation\AnnotatedCommand\Hooks;
+
+use Consolidation\AnnotatedCommand\CommandData;
+
+/**
+ * Validate the arguments for the current command.
+ *
+ * @see HookManager::addValidator()
+ */
+interface ValidatorInterface
+{
+ public function validate(CommandData $commandData);
+}