Flow\JSONPath\Test\JSONPathTest::testLastKey PHP Method

    public function testLastKey()
    {
        // Array test for array
        $jsonPath = new JSONPath(['a' => 'A', 'b' => 'B', 'c' => 'C']);
        $lastKey = $jsonPath->lastKey();
        $this->assertEquals('c', $lastKey);
        // Array test for object
        $jsonPath = new JSONPath((object) ['a' => 'A', 'b' => 'B', 'c' => 'C']);
        $lastKey = $jsonPath->lastKey();
        $this->assertEquals('c', $lastKey);
    }