Variable categories

curl --request GET \
  --url https://safe.dfda.earth/api/v3/variableCategories \
  --header 'Authorization: Bearer <token>'

[
  {
    "appType": "<string>",
    "causeOnly": true,
    "combinationOperation": "<string>",
    "createdTime": "<string>",
    "unitAbbreviatedName": "<string>",
    "unitId": 123,
    "durationOfAction": 123,
    "fillingValue": 123,
    "helpText": "<string>",
    "id": 123,
    "imageUrl": "<string>",
    "ionIcon": "<string>",
    "manualTracking": true,
    "maximumAllowedValue": "<string>",
    "measurementSynonymSingularLowercase": "<string>",
    "minimumAllowedValue": "<string>",
    "moreInfo": "<string>",
    "name": "<string>",
    "onsetDelay": 123,
    "outcome": true,
    "pngPath": "<string>",
    "pngUrl": "<string>",
    "public": true,
    "svgPath": "<string>",
    "svgUrl": "<string>",
    "updated": 123,
    "updatedTime": "<string>",
    "variableCategoryName": "Activity",
    "variableCategoryNameSingular": "<string>"
  }
]