Help on CampaignType to add more buttons

I will like to extend the Campaing Edit View to add a custom button in the page actions toolbar, but I have searched and this buttons, such as mautic.campaign.campaign.launch.builder, is added in the Custom Mautic\CampaignBundle\Form\Type\CampaignType form class. Is there any way to extend this form in a safe way to add a new button?