source:
  schema:
    type: object
    properties:
      child:
        type: object
        properties:
          grandchild:
            type: object
  access:
    - location: /
      write: true

expected: {"rules":{".write":"((((!newData.exists()||newData.hasChildren())&&(!newData.child('child').exists()||newData.child('child').hasChildren())&&(!newData.child('child').child('grandchild').exists()||newData.child('child').child('grandchild').hasChildren()))))",".read":"false","child":{".write":"(((((!newData.exists()||newData.hasChildren())&&(!newData.child('grandchild').exists()||newData.child('grandchild').hasChildren())))))",".read":"false","grandchild":{".write":"(((((!newData.exists()||newData.hasChildren())))))",".read":"false"}}}}