KtDotQualifiedExpression(53,61): 's.action'
  KaInapplicableCallCandidate:
    candidate = KaImplicitInvokeCall:
      contextArgumentMapping = {}
      contextArguments = []
      dispatchReceiver = KaExplicitReceiverValue:
        expression = action
        isSafeNavigation = false
        type = (kotlin.String.() -> kotlin.Unit)?
      extensionReceiver = KaExplicitReceiverValue:
        expression = s
        isSafeNavigation = false
        type = kotlin.String
      signature = KaFunctionSignature:
        receiverType = null
        returnType = kotlin.Unit
        symbol = kotlin/Function1.invoke(<dispatch receiver>: (P1) -> R, p1: P1): R
        valueParameters = [
          KaVariableSignature:
            name = p1
            receiverType = null
            returnType = kotlin.String
            symbol = p1: P1
            contextParameters = []
            callableId = null
        ]
        contextParameters = []
        callableId = kotlin/Function1.invoke
      typeArgumentsMapping = {}
      valueArgumentMapping = {}
    diagnostic = ERROR<UNSAFE_IMPLICIT_INVOKE_CALL: Reference has a nullable type '(String.() -> Unit)?'. Use explicit '?.invoke' to make a function-like call instead.>
    isInBestCandidates = true
