public static TagHelperAttributeList AddOrAppendClass(
this TagHelperAttributeList tagAttributesList,
string classValue,
bool appendFirst = false,
bool checkForDuplicates = false,
Func <string, bool> dontAddIfPred = null)
=> tagAttributesList.AddOrAppendAttribute("class", classValue, appendFirst, checkForDuplicates, dontAddIfPred);
