DropDownModel<T>  constructor 
      
      DropDownModel<T> ({})
     
    
Constructor for creating a DropDownModel instance.
key: A required string key to uniquely identify the item.value: A required value of generic typeT.text: A required string text to be displayed in the dropdown.
Implementation
DropDownModel({
  required this.key,
  this.value,
  required this.text,
  this.subtext,
  this.prefixWidget,
  this.disabled = false,
  this.disabledText,
});