TODO: Make Metadata schema class and include it into every data model it's needed in.

[Dhi13man]

Example metadata

{
    "metadata": {
        "attribution": "openrouteservice.org | OpenStreetMap contributors",
        "service": "matrix",
        "timestamp": 1632652598861,
        "query": {
            "locations": [
                [
                    9.70093,
                    48.477473
                ],
                [
                    9.207916,
                    49.153868
                ],
                [
                    37.573242,
                    55.801281
                ],
                [
                    115.663757,
                    38.106467
                ]
            ],
            "profile": "driving-car",
            "responseType": "json"
        },
        "engine": {
            "version": "6.6.1",
            "build_date": "2021-07-05T10:57:48Z",
            "graph_date": "2021-09-12T10:05:32Z"
        }
    }
}

[Dhi13man]

API Documentation

https://openrouteservice.org/dev/#/api-docs/

Potential Implementation steps

1. Test out the various API endpoints and their responses. See how those responses correspond to encapsulated Data Model Classes in the package.
2. See which responses include this metadata model.
3. Make an ORSMetadata class and include it as a member of all the encapsulated classes of the package that need it as per the information from Step 1.

[Dhi13man]

Metadata -> query can be kept dynamic or Map<String, dynamic>