Accessing all template keys to build data

[naveedannoor]

I am wondering if there is a easy to way to access all the template keys somehow so that I can resolve them to build data. For example, I have the following template

{
  {{#if foo.headers.stuff}}
    "context": "{{?foo.headers.stuff}}",
  {{/if}}
    "id":
      "{{?foo.bar.customerId}}",
    "orderNumber": "OU812",
    "orderItems": [
      {
        "itemCode": "7013-520",
        "quantity": 1
      }
    ]
}

I would like the keys foo.headers.stuff, foo.bar.customerId, and foo.headers.stuff because these are properties that live in different locations within a context that need to be resolved in order to build data for the template. Is there a way to get the list of these keys or a way to achieve what i am trying to do?