{
  "topological_order": [
    "Input",
    "Validate",
    "Aggregate",
    "Charts",
    "API",
    "Report"
  ],
  "longest_path": [
    "Input",
    "Validate",
    "Aggregate",
    "Charts",
    "Report"
  ],
  "boundary": "Example weights are invented planning units, not measured elapsed times."
}