Zend\Code\Generator\ClassGenerator::isAbstract PHP Method

    public function isAbstract()
    {
        return (bool) ($this->flags & self::FLAG_ABSTRACT);
    }

 public function testAbstractAccessors()
 {
     $classGenerator = new ClassGenerator();
     $this->assertFalse($classGenerator->isAbstract());
     $classGenerator->setAbstract(true);
     $this->assertTrue($classGenerator->isAbstract());
 }