Fix RedisCluster::multi() return type

Author: sayuprc

resources/functionMap.php

@@ -8896,7 +8896,7 @@
 'RedisCluster::mget' => ['array', 'array'=>'array'],
 'RedisCluster::mset' => ['bool', 'array'=>'array'],
 'RedisCluster::msetnx' => ['int', 'array'=>'array'],
-'RedisCluster::multi' => ['Redis', 'mode='=>'int'],
+'RedisCluster::multi' => ['RedisCluster|bool', 'mode='=>'int'],
 'RedisCluster::object' => ['string', 'string='=>'string', 'key='=>'string'],
 'RedisCluster::persist' => ['bool', 'key'=>'string'],
 'RedisCluster::pExpire' => ['bool', 'key'=>'string', 'ttl'=>'int'],

tests/PHPStan/Rules/Debug/DumpTypeRuleTest.php

@@ -102,4 +102,18 @@ public function testBug11179NoNamespace(): void
 		]);
 	}
 
+	public function testBug13392(): void
+	{
+		$this->analyse([__DIR__ . '/data/bug-13392.php'], [
+			[
+				'Dumped type: RedisCluster',
+				15,
+			],
+			[
+				'Dumped type: bool|RedisCluster',
+				18,
+			],
+		]);
+	}
+
 }

tests/PHPStan/Rules/Debug/data/bug-13392.php

@@ -0,0 +1,19 @@
+<?php declare(strict_types = 1);
+
+namespace Bug13392;
+
+use RedisCluster;
+
+interface Client
+{
+	public function get(): RedisCluster;
+}
+
+function func(Client $client): void
+{
+	$redisCluster = $client->get();
+	\PHPStan\dumpType($redisCluster);
+
+	$transaction = $redisCluster->multi();
+	\PHPStan\dumpType($transaction);	
+}