{
  "version": 1,
  "type": "hierarchy",
  "calcs": {
    "SUM": {"argType": "field", "numericInput": true},
    "COUNT": {"argTypes": ["row", "field"], "outputType": "integer"},
    "NUNIQUE": {"argType": "field", "outputType": "integer"},
    "MIN": {"argType": "field"},
    "MAX": {"argType": "field"},
    "AVG": {"argType": "field", "numericInput": true},
    "JOIN_STR": {"argType": "field", "outputType": "string"},
    "JOIN_STR_DISTINCT": {"argType": "field", "outputType": "string"},
    "MEDIAN": {"argType": "field", "numericInput": true},
    "STDDEV": {"argType": "field", "numericInput": true},
    "VAR": {"argType": "field", "numericInput": true}
  },
  "configSchema": {
    "required": ["idField", "parentIdField", "aggs"],
    "nonEmptyString": ["idField", "parentIdField"],
    "list": ["aggs"]
  }
}