Element component

component =>

array:11 [
  "class" => "Drupal\Core\Render\Element\ComponentElement"
  "provider" => "core"
  "id" => "component"
  "#pre_render" => array:1 [
    0 => array:2 [
      0 => Drupal\Core\Render\Element\ComponentElement {#1641
        #pluginId: "component"
        #pluginDefinition: array:3 [
          "class" => "Drupal\Core\Render\Element\ComponentElement"
          "provider" => "core"
          "id" => "component"
        ]
        #configuration: []
        #stringTranslation: null
        #_serviceIds: []
        #_entityStorages: []
        #messenger: null
      }
      1 => "preRenderComponent"
    ]
  ]
  "#component" => ""
  "#props" => []
  "#slots" => []
  "#propsAlter" => []
  "#slotsAlter" => []
  "#type" => "component"
  "#defaults_loaded" => true
]