dsm of field

Array
(
    [#title] => E-mail
    [#title_display] => before
    [#description] =>
    [#field_parents] => Array
        (
        )

    [#required] => 1
    [#delta] => 0
    [#weight] => 0
    [value] => Array
        (
            [#title] => E-mail
            [#title_display] => before
            [#description] =>
            [#field_parents] => Array
                (
                )

            [#required] => 1
            [#delta] => 0
            [#weight] => 0
            [#type] => email
            [#default_value] =>
            [#placeholder] =>
            [#size] => 60
            [#maxlength] => 254
            [#input] => 1
            [#autocomplete_route_name] =>
            [#process] => Array
                (
                    [0] => Array
                        (
                            [0] => Drupal\Core\Render\Element\Email
                            [1] => processAutocomplete
                        )

                    [1] => Array
                        (
                            [0] => Drupal\Core\Render\Element\Email
                            [1] => processAjaxForm
                        )

                    [2] => Array
                        (
                            [0] => Drupal\Core\Render\Element\Email
                            [1] => processPattern
                        )

                    [3] => Array
                        (
                            [0] => Drupal\bootstrap\Plugin\ProcessManager
                            [1] => process
                        )

                )

            [#element_validate] => Array
                (
                    [0] => Array
                        (
                            [0] => Drupal\Core\Render\Element\Email
                            [1] => validateEmail
                        )

                )

            [#pre_render] => Array
                (
                    [0] => Array
                        (
                            [0] => Drupal\Core\Render\Element\Email
                            [1] => preRenderEmail
                        )

                    [1] => Array
                        (
                            [0] => Drupal\bootstrap\Plugin\PrerenderManager
                            [1] => preRender
                        )

                )

            [#theme] => input__email
            [#theme_wrappers] => Array
                (
                    [0] => form_element
                )

            [#value_callback] => Array
                (
                    [0] => Drupal\Core\Render\Element\Email
                    [1] => valueCallback
                )

            [#defaults_loaded] => 1
            [#tree] => 1
            [#parents] => Array
                (
                    [0] => field_user_e_mail
                    [1] => 0
                    [2] => value
                )

            [#array_parents] => Array
                (
                    [0] => field_user_e_mail
                    [1] => widget
                    [2] => 0
                    [3] => value
                )

            [#processed] => 1
            [#attributes] => Array
                (
                    [data-drupal-selector] => edit-field-user-e-mail-0-value
                    [class] => Array
                        (
                        )

                )

            [#description_display] => after
            [#errors] =>
            [#id] => edit-field-user-e-mail-0-value
            [#name] => field_user_e_mail[0][value]
            [#value] =>
            [#ajax_processed] =>
            [#ajax] =>
            [#input_group] =>
            [#input_group_button] =>
            [#sorted] => 1
        )

    [#tree] => 1
    [#parents] => Array
        (
            [0] => field_user_e_mail
            [1] => 0
        )

    [#array_parents] => Array
        (
            [0] => field_user_e_mail
            [1] => widget
            [2] => 0
        )

    [#processed] =>
    [#attributes] => Array
        (
            [data-drupal-selector] => edit-field-user-e-mail-0
        )

    [#description_display] => after
    [#errors] =>
    [#id] => edit-field-user-e-mail-0
    [#states] => Array
        (
            [visible] => Array
                (
                    [:input[#edit-proprietaire-0]] => Array
                        (
                            [checked] => 1
                        )

                )

        )

)