{
    "type": "object",
    "properties": {
        "procedure_name": { "type": "string" },
        "actors": {
            "type": "array",
            "items": { 
                "type": "object",
                "properties": {
                    "role": { "type": "string"},
                    "name": { "type": "string"}
                },
                "required": ["role"]
            }
        },
        "tasks": {
            "type": "array",
            "items": {
                "type": "object",
                "properties": {
                    "file": { "type": "string"},
                    "url": {"type": "string"}
                },
                "anyOf": [
                    {
                        "required": ["file"]
                    },
                    {
                        "required": ["url"]
                    }
                ]
            }
        },
        "css": {"type": "string"}
    },
    "required": ["procedure_name", "actors", "tasks"]
}