This backend, regardless of what value you set here will be used automatically if RouteHandleDescription.backend_url is supplied a value. This is done to ensure that context is correctly set.
Use BackendLayout
This layout should have its route path set to :pk. Value :pk is a
placeholder that is dynamic. PK for the unfamiliar stands for
"Primary Key" which is a unique ID used by databases. Its recommended
usage here is two-fold: denotes a single item and if you need to use
path /add (used for new object creation, see DetailLayout) you
can.
Use DetailLayout.
Use History.
Use Redirect.
Use List.
Use Markdown.
Use Settings
Use Ticket.
Available layout components for use with a dynamic route.