../../m2/methods.m2:490:56-490:112: --source code: removeHook(HashTable,Thing,Function) := (obj,key,hook) -> (c := obj.cache; if c#?key then c#key = delete(c#key,hook)) ../../m2/methods.m2:486:63-486:108: --source code: removeHook(MutableHashTable,Thing,Function) := (obj,key,hook) -> if obj#?key then obj#key = delete(obj#key,hook)