KtOperationReferenceExpression(195,196): '='
  KaApplicableCallCandidate:
    candidate = KaSimpleVariableAccessCall:
      contextArguments = []
      dispatchReceiver = null
      extensionReceiver = null
      isContextSensitive = false
      kind = Write:
        value = variable + foo
      signature = KaVariableSignature:
        name = variable
        receiverType = null
        returnType = test.WithOperator
        symbol = var variable: test.WithOperator
        contextParameters = []
        callableId = null
      typeArgumentsMapping = {}
    isInBestCandidates = true