I want to use addAll() instead of add() in below code. How to achieve this?
//one list is there: myList1
List<String> myList1 = New List<String>;

//I want to add Name field values from my Custom Meta Data to myList
for(myCustomMetaData__mdt mtdVar: [select id, Name from myCustomMetaData__mdt LIMIT 1000]){
            myList1.add(mtdVar.Name);
        }