spec property
Spec is what the machine IS — os, arch, cores, RAM, accelerators — the static half, changed only when something reports it again. Absent when nothing has ever been reported, and a scheduler reads absence as "cannot satisfy a floor" rather than as "no limits".
Please note: This property should have been non-nullable! Since the specification file does not include a default value (using the "default:" property), however, the generated source code must fall back to having a nullable type. Consider adding a "default:" property in the specification file to hide this note.
Implementation
Spec? spec;