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diff --git a/vendor/bshaffer/oauth2-server-php/src/OAuth2/Storage/AccessTokenInterface.php b/vendor/bshaffer/oauth2-server-php/src/OAuth2/Storage/AccessTokenInterface.php
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+++ b/vendor/bshaffer/oauth2-server-php/src/OAuth2/Storage/AccessTokenInterface.php
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+<?php
+
+namespace OAuth2\Storage;
+
+/**
+ * Implement this interface to specify where the OAuth2 Server
+ * should get/save access tokens
+ *
+ * @author Brent Shaffer <bshafs at gmail dot com>
+ */
+interface AccessTokenInterface
+{
+ /**
+ * Look up the supplied oauth_token from storage.
+ *
+ * We need to retrieve access token data as we create and verify tokens.
+ *
+ * @param $oauth_token
+ * oauth_token to be check with.
+ *
+ * @return
+ * An associative array as below, and return NULL if the supplied oauth_token
+ * is invalid:
+ * - expires: Stored expiration in unix timestamp.
+ * - client_id: (optional) Stored client identifier.
+ * - user_id: (optional) Stored user identifier.
+ * - scope: (optional) Stored scope values in space-separated string.
+ * - id_token: (optional) Stored id_token (if "use_openid_connect" is true).
+ *
+ * @ingroup oauth2_section_7
+ */
+ public function getAccessToken($oauth_token);
+
+ /**
+ * Store the supplied access token values to storage.
+ *
+ * We need to store access token data as we create and verify tokens.
+ *
+ * @param $oauth_token oauth_token to be stored.
+ * @param $client_id client identifier to be stored.
+ * @param $user_id user identifier to be stored.
+ * @param int $expires expiration to be stored as a Unix timestamp.
+ * @param string $scope OPTIONAL Scopes to be stored in space-separated string.
+ *
+ * @ingroup oauth2_section_4
+ */
+ public function setAccessToken($oauth_token, $client_id, $user_id, $expires, $scope = null);
+
+ /**
+ * Expire an access token.
+ *
+ * This is not explicitly required in the spec, but if defined in a draft RFC for token
+ * revoking (RFC 7009) https://tools.ietf.org/html/rfc7009
+ *
+ * @param $access_token
+ * Access token to be expired.
+ *
+ * @return BOOL true if an access token was unset, false if not
+ * @ingroup oauth2_section_6
+ *
+ * @todo v2.0 include this method in interface. Omitted to maintain BC in v1.x
+ */
+ //public function unsetAccessToken($access_token);
+}