Given definitions for a plugin, return a valid spec.

Pseudo panel model including multiple targets (not mixed).

Single query payload included in a query request.

Query request against a single data source (not mixed).

Single query target saved in a dashboard/panel/alert JSON.

SchemaBuilder is a helper function that can be used by backend build processes to produce static schema definitions This is not intended as runtime code, and is not the only way to produce a schema (we may also want/need to use typescript as the source).

Supported expression types +enum.