{
  ARRAY => {
    HASH => {
      age => { SCALAR => 1 },
      fname => { SCALAR => 1 },
      foo => { ARRAY => { GLOBREF => 1 }, HASH => {} },
      kids => {
        ARRAY => {
          HASH => {
            age => { SCALAR => 1 },
            first_name => { SCALAR => 1 },
            middle_name => { SCALAR => 1 },
            name => { SCALAR => 1 },
            vaccinated => { SCALAR => 1 },
          },
        },
      },
      last_name => { SCALAR => 1 },
      occupation => {
        HASH => { title => { SCALAR => 1 }, years_on_job => { SCALAR => 1 } },
      },
    },
  },
}
---
ARRAY:
  HASH:
    age:
      SCALAR: 1
    fname:
      SCALAR: 1
    foo:
      ARRAY:
        GLOBREF: 1
      HASH: {}
    kids:
      ARRAY:
        HASH:
          age:
            SCALAR: 1
          first_name:
            SCALAR: 1
          middle_name:
            SCALAR: 1
          name:
            SCALAR: 1
          vaccinated:
            SCALAR: 1
    last_name:
      SCALAR: 1
    occupation:
      HASH:
        title:
          SCALAR: 1
        years_on_job:
          SCALAR: 1