ConstructionGL2 Part 2: Better guided steps and recipes. (#5103)

Content.Shared/Construction/IGraphCondition.cs

@@ -1,4 +1,5 @@
-using Content.Shared.Examine;
+using System.Collections.Generic;
+using Content.Shared.Examine;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
 
@@ -8,6 +9,7 @@ namespace Content.Shared.Construction
     public interface IGraphCondition
     {
         bool Condition(EntityUid uid, IEntityManager entityManager);
-        bool DoExamine(ExaminedEvent args) { return false; }
+        bool DoExamine(ExaminedEvent args);
+        IEnumerable<ConstructionGuideEntry> GenerateGuideEntry();
     }
 }