update Piwik to version 2.16 (fixes #91)

www/analytics/vendor/php-di/invoker/src/InvokerInterface.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace Invoker;
+
+use Invoker\Exception\InvocationException;
+use Invoker\Exception\NotCallableException;
+use Invoker\Exception\NotEnoughParametersException;
+
+/**
+ * Invoke a callable.
+ *
+ * @author Matthieu Napoli <matthieu@mnapoli.fr>
+ */
+interface InvokerInterface
+{
+    /**
+     * Call the given function using the given parameters.
+     *
+     * @param callable $callable   Function to call.
+     * @param array    $parameters Parameters to use.
+     *
+     * @return mixed Result of the function.
+     *
+     * @throws InvocationException Base exception class for all the sub-exceptions below.
+     * @throws NotCallableException
+     * @throws NotEnoughParametersException
+     */
+    public function call($callable, array $parameters = array());
+}