MyCustomType with Equals Method Implemented

MyCustomType

public class MyCustomType {
    public Integer myField {get;set;}
    
    public Boolean equals(Object o){
        if(this === o){
            return true;
        }
        if(!(o instanceof MyCustomType)){
            return false;
        }else{
            MyCustomType passedMyCustomType = (MyCustomType)o;
            if(this.myField == passedMyCustomType.myField){
                return true;
            }else{
                return false;
            }
        }
    }
}