/// <summary> /// Returns the first non-null value of /// the many text description values in this SFMediaDetail, in order: /// Title, AltText, Caption , Description. /// </summary> public string GetFirstAltText() { if (Title.NotNulle()) { return(Title); } if (AltText.NotNulle()) { return(AltText); } if (Caption.NotNulle()) { return(Caption); } if (Description.NotNulle()) { return(Description); } return(null); }