init static method
this will initialize this class fields, but if using manually then set initializeCustomDecoration to false in CustomStylesConfig.init();
Implementation
static void init({
InputDecoration? textfieldInputDecoration,
InputDecoration? dropdownInputDecoration,
}) {
textfieldDecoration = textfieldInputDecoration ?? customDecoration;
dropDownDecoration = textfieldInputDecoration ?? customDecoration;
}