[ZEPPELIN-6661] Cover notebook editor save timing - #5483

class JSONObject in package json is deprecated (since 1.0.6): Use The Scala Library Index to find alternatives: https://index.scala-lang.org/

abstract type pattern StatementT is unchecked since it is eliminated by erasure

abstract type pattern StatementT is unchecked since it is eliminated by erasure

non-variable type argument Object in type pattern java.util.Set[Object] is unchecked since it is eliminated by erasure

non-variable type argument Object in type pattern java.util.List[Object] is unchecked since it is eliminated by erasure