The type or namespace name `NavMeshQueryFilter' could not be found. Are you missing an assembly reference?

Despite using UnityEngine.AI;, the only source that the documentation lists, I get the above error on NavMeshQueryFilter. Such other objects as NavMesh, NavMeshHit and NavMeshPath are in the same file with no problem.

From where does one include the NavMeshQueryFilter struct?


Immediately upon posting the question, looking at that document page again revealed that it’s a new struct in 5.6b, whereas I’m still at 5.5.