spec\Crummy\Phlack\Builder\AttachmentBuilderSpec::it_is_a_BuilderInterface PHP Метод

    public function it_is_a_BuilderInterface()
    {
        $this->shouldHaveType('Crummy\\Phlack\\Builder\\AttachmentBuilder');
        $this->shouldImplement('\\Crummy\\Phlack\\Builder\\BuilderInterface');
    }