Provides translatable markup class.
This object, when cast to a string, will return the formatted, translated string. Avoid casting it to a string yourself, because it is preferable to let the rendering system do the cast as late as possible in the rendering process, so that this object itself can be put, untranslated, into render caches and thus the cache can be shared between different language contexts.
Hierarchy
class \Drupal\Component\Render\FormattableMarkup implements \Countable, MarkupI
