minecraft-bedrock-json-schemas/source/resource/ui/elements/properties/anims.json

{
  "title": "Animations",
  "description": "The animations that are contained within this element.",
  "anyOf": [
    {
      "$ref": "../../general/item_ref.json"
    },
    {
      "type": "array",
      "items": {
        "$ref": "../../general/item_ref.json"
      }
    }
  ]
}