proposition: Lemma Reflexive_Roption : Reflexive R -> Reflexive Roption.
proof: Proof. clear. compute. destruct x; try constructor; auto. Qed.
imports: Coq.Relations.Relation_Definitions Coq.Classes.RelationClasses Coq.Classes.Morphisms ExtLib.Core.RelDec ExtLib.Structures.Reducible ExtLib.Structures.Traversable ExtLib.Structures.Applicative ExtLib.Structures.Functor ExtLib.Structures.FunctorLaws ExtLib.Data.Fun ExtLib.Tactics.Injection ExtLib.Tactics.Consider