trigger property
Trigger is the root of the version's step tree. Optional: a version with no trigger is created invalid, and cannot run until one is set.
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
FlowTrigger? trigger;