public void CallerMethod()
{
    var dataRequest = new DataRequestDTO();
    var someText = ReturnText(dataRequest);
    AnotherMethod(dataRequest);
}



public string ReturnText(DataRequestDTO dataRequest)
{
    dataRequest.DetailsText = "Changing the object"; // I would think that  this change souldn't be happening here,
 //or is this not an issue?
    return "Some text";
}