Element checkbox

Add to Standard shortcuts
checkbox =>
array:13 [
  "class" => "Drupal\Core\Render\Element\Checkbox"
  "provider" => "core"
  "id" => "checkbox"
  "#input" => true
  "#return_value" => 1
  "#process" => array:3 [
    0 => array:2 [
      0 => "Drupal\Core\Render\Element\Checkbox"
      1 => "processCheckbox"
    ]
    1 => array:2 [
      0 => "Drupal\Core\Render\Element\Checkbox"
      1 => "processAjaxForm"
    ]
    2 => array:2 [
      0 => "Drupal\Core\Render\Element\Checkbox"
      1 => "processGroup"
    ]
  ]
  "#pre_render" => array:2 [
    0 => array:2 [
      0 => "Drupal\Core\Render\Element\Checkbox"
      1 => "preRenderCheckbox"
    ]
    1 => array:2 [
      0 => "Drupal\Core\Render\Element\Checkbox"
      1 => "preRenderGroup"
    ]
  ]
  "#theme" => "input__checkbox"
  "#theme_wrappers" => array:1 [
    0 => "form_element"
  ]
  "#title_display" => "after"
  "#value_callback" => array:2 [
    0 => "Drupal\Core\Render\Element\Checkbox"
    1 => "valueCallback"
  ]
  "#type" => "checkbox"
  "#defaults_loaded" => true
]