What is a key feature of the Atomic component in container hierarchy?

The key feature of the Atomic component in the container hierarchy is that it can be directly contained only by primary containers. This is significant because Atomic components represent the most basic, low-level elements in the Guidewire user interface (UI) framework and are not designed to be nested within other Atomic components. Instead, they are intended to be used as standalone elements that serve specific functions or display data, which primary containers are designed to manage.

Primary containers provide the necessary context and structure for these Atomic components, allowing them to function effectively within the application. By restricting Atomic components to be placed only within primary containers, Guidewire ensures that the UI remains organized and maintains a clear hierarchy, which enhances maintainability and usability. This structure supports the development of complex applications while adhering to consistent design principles.