**Purpose**: Defines the grid layout structure and embedded widget configurations. This is the core of the attributesGroup widget, containing the actual attribute widgets arranged in rows and columns.

**Managing Embedded Layouts**: Use `cplace_execute_layout_script` with `layout.define()` and the `embeddedLayouts` parameter to define nested layouts within container widgets like AttributesGroup. This handles embedded layout creation atomically as part of the overall layout definition.