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vendor/league/config/src/ConfigurationInterface.php

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+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/config package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\Config;
+
+use League\Config\Exception\UnknownOptionException;
+use League\Config\Exception\ValidationException;
+
+/**
+ * Interface for reading configuration values
+ */
+interface ConfigurationInterface
+{
+    /**
+     * @param string $key Configuration option path/key
+     *
+     * @psalm-param non-empty-string $key
+     *
+     * @return mixed
+     *
+     * @throws ValidationException if the schema failed to validate the given input
+     * @throws UnknownOptionException if the requested key does not exist or is malformed
+     */
+    public function get(string $key);
+
+    /**
+     * @param string $key Configuration option path/key
+     *
+     * @psalm-param non-empty-string $key
+     *
+     * @return bool Whether the given option exists
+     *
+     * @throws ValidationException if the schema failed to validate the given input
+     */
+    public function exists(string $key): bool;
+}