search vigilant general list

is illusory hunt an vigilant the properties general list?

public category customer

    private _id integer

    private _name string

    open ability id() integer
        get
            relapse _id
        finish get
        set
            _id = value
        finish set
    finish property

    open ability name() string
        get
            relapse _name
        finish get
        set
            _name = value
        finish set
    finish property

    open servant new(id integer, name string)
        _id = id
        _name = name
    finish sub

end class

then loading searching

dim list new list(of customer)

list.add(new customer(1,"a")

list.add(new customer(2,"b")

how i relapse fan vigilant id =1? does have "predicate" generics?

note: i am doing vb.net.