KtOperationReferenceExpression(191,192): '-'
  KaCallResolutionSuccess:
    call = KaSimpleFunctionCall:
      contextArgumentMapping = {}
      contextArguments = []
      dispatchReceiver = KaExplicitReceiverValue:
        expression = variable
        isSafeNavigation = false
        type = MyClass
      extensionReceiver = null
      signature = KaFunctionSignature:
        receiverType = null
        returnType = MyClass
        symbol = /MyClass.unaryMinus(<dispatch receiver>: MyClass): MyClass
        valueParameters = []
        contextParameters = []
        callableId = /MyClass.unaryMinus
      typeArgumentsMapping = {}
      valueArgumentMapping = {}