Return type of field of property instead of property.

src/models/Object.zig

@@ -33,9 +33,9 @@ shape: ShapeKind,
 properties: std.ArrayList(Property),
 children: std.ArrayList(Object),
 
-pub fn getProperty(self: Object, tag: std.meta.Tag(PropertyData)) ?*const PropertyData {
+pub fn getProperty(self: Object, comptime tag: std.meta.Tag(PropertyData)) ?@FieldType(PropertyData, @tagName(tag)) {
     for (self.properties.items) |*prop| {
-        if (std.meta.activeTag(prop.data) == tag) return &prop.data;
+        if (std.meta.activeTag(prop.data) == tag) return @field(prop.data, @tagName(tag));
     }
     return null;
 }