Available on jvm
new(param1:Writer)
new(param1:Writer, param2:Int)
flushBuffer():Void
newLine():Void
lock:Dynamic
append(param1:CharSequence):Writer
append(param1:Char16):Writer
append(param1:CharSequence, param2:Int, param3:Int):Writer
write(param1:Int):Void
write(param1:String, param2:Int, param3:Int):Void
write(param1:String):Void
write(param1:NativeArray<Char16>, param2:Int, param3:Int):Void
write(param1:NativeArray<Char16>):Void