metatag-8.x-1.x-dev/metatag_custom_tags/config/install/metatag_custom_tags.metatag_custom_tag.sitename.yml

langcode: en
status: true
dependencies: {  }
id: sitename
label: Sitename
description: 'The name of the site.'
htmlElement: meta
htmlValueAttribute: content
attributes:
  -
    name: name
    value: sitename