Function apply_data_model_update 

pub fn apply_data_model_update(
    model: &mut Value,
    path: &str,
    value: &Value,
) -> Result<()>

Applies one updateDataModel operation to model.

Split out from UpdateDataModel::apply so callers holding a loose path/value pair (a replayed history entry, say) can reuse the semantics.

Errors

See UpdateDataModel::apply.