How to config input value at Email template

[qwertyly]

Hi everyone I'm deverloper I'm finding a question about how to config email template at file settings.json  

{
  "product_key": "",
  "name": "leo_email_concac",
  "version": "1.0",
  "author": "Leo Theme",
  "inputs": [
    {
      "type": "text",
      "name": "var_name",
      "default": "foo",
      "required": false,
      "label": {
        "en": "English label",
        "fr": "French label"
      },
      "desc": {
        "en": "English description",
        "fr": "French description"
      }
    },
    {
      "type": "text",
      "name": "var_name_lang",
      "default": {
        "en": "My custom text",
        "fr": "Mon texte personnalisé"
      },
      "required": false,
      "lang": true,
      "label": {
        "en": "English label",
        "fr": "French label"
      },
      "desc": {
        "en": "English description",
        "fr": "French description"
      }
    }
  ]
}

It only have example for text input. I don't know how to config radio input (maybe swich), checkbox, color picker...

Document for email templase too hard to find, I has read this document but no things i looking for.

https://github.com/PrestaShop/email-templates-sdk