@@ -0,0 +1,403 @@
+package io.caster.mockito;%0A%0A%0Aimport java.util.ArrayList;%0Aimport java.util.List;%0A%0Apublic class SimpleDatabase implements Database %7B%0A%0A    private List%3CString%3E users = new ArrayList%3C%3E();%0A%0A    @Override%0A    public void addUser(String emailAddress) %7B%0A        users.add(emailAddress);%0A    %7D%0A%0A    @Override%0A    public boolean hasUser(String emailAddress) %7B%0A        return users.contains(emailAddress);%0A    %7D%0A%7D%0A

add an implementation of the Database interface as an example