RelationQuery.optional_relation: def of bendvy-ecs-core@0.1.0.4
Import: import bendvy-ecs-core@0.1.0.4/relation_query.bend as RelationQuery
Lines 33-34 of bendvy-ecs-core@0.1.0.4/relation_query.bend: https://jend.leeeet.dev/read.txt?path=bendvy-ecs-core@0.1.0.4/relation_query.bend&start_line=33&end_line=34

import Base
import relation_types.bend as G
import query.bend as Q

def optional_relation(~S:Data,key:String,descriptor:G.Descriptor<S>) -> Requirement<S>:
  Requirement{key,descriptor,Outgoing{},Q.Optional{},True{}}

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/query.bend&name=Selection
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/relation_query.bend&name=End
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/relation_query.bend&name=Requirement
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/relation_types.bend&name=Descriptor