documentation/formkey_8phtml_source.html

 <?php
 ?>
 <div><input name="form_key" type="hidden" value="<?= /* @escapeNotVerified */ $block->getFormKey() ?>" /></div>
value
$block setTitle( 'CMS Block Title') -> setIdentifier('fixture_block') ->setContent('< h1 >Fixture Block Title</h1 >< a href=" store url</a><p> Config value
Definition: block.php:9

name