GuzzleHttp\Tests\Psr7\FunctionsTest::testReturnsCustomMetadata PHP Метод

    public function testReturnsCustomMetadata()
    {
        $s = Psr7\stream_for('foo', ['metadata' => ['hwm' => 3]]);
        $this->assertEquals(3, $s->getMetadata('hwm'));
        $this->assertArrayHasKey('hwm', $s->getMetadata());
    }