public function testAlias()
 {
     $regEx = $this->r->startOfLine()->upperCaseLetter()->getRegExp();
     //check deprecated alias methods
     $this->assertTrue($regEx->test("A24"));
     $this->assertTrue($regEx->matches("A24"));
     $this->assertArrayHasKey(0, $regEx->exec("A45"));
     $this->assertArrayHasKey(0, $regEx->findIn("A45"));
 }