BIM data patterns

using Speckle.Objects.Data;
using Speckle.Sdk.Models;
using Speckle.Sdk.Models.Extensions;

// After Receive2 — connector data is usually DataObject
var root = await SpeckleBootstrap.Operations.Receive2(/* ... */);

foreach (var obj in root.Flatten().OfType<DataObject>())
{
    Console.WriteLine(obj.name); // "Basic Wall - 200mm"
    Console.WriteLine(obj.speckle_type); // "Objects.Data.DataObject" — same for all BIM elements

    if (obj.properties.TryGetValue("category", out var cat))
        Console.WriteLine($"  category: {cat}");

    // Nested Revit-style parameters
    if (obj.properties["parameters"] is Dictionary<string, object?> paramGroups)
    {
        foreach (var (groupName, group) in paramGroups)
            Console.WriteLine($"  parameter group: {groupName}");
    }
}

// Good — filter by properties
var walls = root.Flatten()
    .OfType<DataObject>()
    .Where(d => d.properties.GetValueOrDefault("category")?.ToString() == "Walls");

// Avoid — speckle_type is not "Wall" or "Door" in v3
// if (obj.speckle_type.Contains("Wall")) { ... }