added the update cancel head banner

                <td style="-moz-hyphens:auto;-webkit-hyphens:auto;Margin:0;border-collapse:collapse!important;color:#0a0a0a;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen-Sans,Ubuntu,Cantarell,'Helvetica Neue',Arial,sans-serif;font-size:16px;font-weight:400;hyphens:auto;line-height:1.3;margin:0;padding:0;text-align:left;vertical-align:top;word-wrap:break-word">

EOF;

protected $bannerHeading = <<<EOF

<tr style="border: 1px solid #EAEDF2;box-sizing: border-box;">

<td>

<table class="spacer float-center" style="Margin:0 auto;border-collapse:collapse;border-spacing:0;float:none;margin:0 auto;padding:0;text-align:center;vertical-align:top;width:100%%">

	<tbody>

	<tr style="padding:0;text-align:left;vertical-align:top">

		<td style="-moz-hyphens:auto;-webkit-hyphens:auto;Margin:0;border-collapse:collapse!important;color:#0a0a0a;font-size:40px;font-weight:400;hyphens:auto;line-height:36px;margin:0;mso-line-height-rule:exactly;padding:0;text-align:left;vertical-align:top;word-wrap:break-word;background:%s;font-size:18px;text-align:center;font-weight:500;">%s</td>

	</tr>

	</tbody>

</table>

<table class="spacer float-center" style="Margin:0 auto;border-collapse:collapse;border-spacing:0;float:none;margin:0 auto;padding:0;text-align:center;vertical-align:top;width:100%%">

	<tbody>

	<tr style="padding:0;text-align:left;vertical-align:top">

		<td style="-moz-hyphens:auto;-webkit-hyphens:auto;Margin:0;border-collapse:collapse!important;color:#0a0a0a;font-size:40px;font-weight:400;hyphens:auto;line-height:36px;margin:0;mso-line-height-rule:exactly;padding:0;text-align:left;vertical-align:top;word-wrap:break-word">&#xA0;</td>

	</tr>

	</tbody>

</table>

EOF;

protected $buttonGrouptentative = <<<EOF

<table class="spacer" style="border-collapse:collapse;border-spacing:0;padding:0;text-align:left;vertical-align:top;width:100%%">

	<tbody>

		$this->htmlBody .= vsprintf($this->header, [$logoMailUrl, $this->themingDefaults->getName()]);

	}

	/**

	 * Adds a header banner

	 */

	public function addHeadingBanner(string $color,string $text, $plainText = '') {

		$this->htmlBody .= vsprintf($this->bannerHeading, [$color,$text]);

		if ($plainText !== false) {

			$this->plainBody .= $plainText . PHP_EOL . PHP_EOL;

		}

		$this->bodyOpened = true;

	}

	/**

	 * Adds a list item to the body of the email