Document::getButtons

public function getButtons(): ?array
{
	return [
		'open' =>
			(new Layout\Footer\Button(Loc::getMessage('CRM_COMMON_ACTION_OPEN'), Layout\Footer\Button::TYPE_PRIMARY))
				->setAction($this->getOpenDocumentAction())
		,

		'copyPublicLink' =>
			(new Layout\Footer\Button(Loc::getMessage('CRM_COMMON_ACTION_COPY_LINK'), Layout\Footer\Button::TYPE_SECONDARY))
				->setAction(
					$this->getUrlAction('Document:CopyPublicLink', 'publicUrl', $this->getPublicUrl()),
				)
		,

		'sign' =>
			(new Layout\Footer\Button(Loc::getMessage('CRM_COMMON_ACTION_SIGN'), Layout\Footer\Button::TYPE_SECONDARY))
				->setAction(
					//todo implement signing or hide this button
					new Layout\Action\JsCode("alert('you are signing the document');")
				)
		,
	];
}