code/models/editablefields/EditableFieldDate.php
public function getFieldConfiguration()
    {
        $default = ($this->getSetting('DefaultToToday')) ? $this->getSetting('DefaultToToday') : false;
        $label   = _t('Moo_EditableField.DEFAULTTOTODAY', 'Default to Today?');

        return [
            new CheckboxField($this->getSettingName('DefaultToToday'), $label, $default),
        ];
    }
public function getFieldConfiguration()
    {
        $default = ($this->getSetting('DefaultToToday')) ? $this->getSetting('DefaultToToday') : false;
        $label   = _t('Moo_EditableField.DEFAULTTOTODAY', 'Default to Today?');

        return [
            new CheckboxField($this->getSettingName('DefaultToToday'), $label, $default),
        ];
    }
Get extra configuration fields.

@return array