protected function _prepareLayout()
    {
        $this->buttonList->remove('save');
        $this->buttonList->remove('delete');
        $this->buttonList->remove('reset');

        $this->buttonList->add(
            'send',
            [
                'label' => __('Send mail ...'),
                'onclick' => "setLocation('{$this->getUrl('*/*/send', 
                    ['id' => $this->_mail->getId()]
                    )}')",
                'class' => 'task'
            ]
        );

        $this->buttonList->add(
            'send_post',
            [
                'label' => __('Resend mail'),
                'onclick' => "setLocation('{$this->getUrl('*/*/sendPost', 
                [
                    'id' => $this->_mail->getId()
                ])}')",
                'class' => 'task'
            ]
        );

        return parent::_prepareLayout();
    }
protected function _prepareLayout()
    {
        $this->buttonList->remove('save');
        $this->buttonList->remove('delete');
        $this->buttonList->remove('reset');

        $this->buttonList->add(
            'send',
            [
                'label' => __('Send mail ...'),
                'onclick' => "setLocation('{$this->getUrl('*/*/send', 
                    ['id' => $this->_mail->getId()]
                    )}')",
                'class' => 'task'
            ]
        );

        $this->buttonList->add(
            'send_post',
            [
                'label' => __('Resend mail'),
                'onclick' => "setLocation('{$this->getUrl('*/*/sendPost', 
                [
                    'id' => $this->_mail->getId()
                ])}')",
                'class' => 'task'
            ]
        );

        return parent::_prepareLayout();
    }
protected function _prepareLayout ( ) { $ this -> buttonList -> remove ( 'save' ) ; $ this -> buttonList -> remove ( 'delete' ) ; $ this -> buttonList -> remove ( 'reset' ) ; $ this -> buttonList -> add ( 'send' , [ 'label' => __ ( 'Send mail ...' ) , 'onclick' => "setLocation('{$this->getUrl('*/*/send', 
                    ['id' => $this->_mail->getId()]
                    )}')" , 'class' => 'task' ] ) ; $ this -> buttonList -> add ( 'send_post' , [ 'label' => __ ( 'Resend mail' ) , 'onclick' => "setLocation('{$this->getUrl('*/*/sendPost', 
                [
                    'id' => $this->_mail->getId()
                ])}')" , 'class' => 'task' ] ) ; return parent :: _prepareLayout ( ) ; }
Prepare the layout.

@return $this
Prepare the layout .