public function testShowLeaderLines()
{
$object = new Series();
$this->assertInstanceOf('PhpOffice\\PhpPresentation\\Shape\\Chart\\Series', $object->setShowLeaderLines(true));
$this->assertTrue($object->hasShowLeaderLines());
$this->assertInstanceOf('PhpOffice\\PhpPresentation\\Shape\\Chart\\Series', $object->setShowLeaderLines(false));
$this->assertFalse($object->hasShowLeaderLines());
}