//We take our dependences via the constructor and they are of an abstracted type
//swapping which emailer we use is simple
public SolidEmailer(IEmailDependency emailDependency)
{
_emailDependency = emailDependency;
}
public SolidUserRecordUpdater(IUpdateUserRecords updater, IEmailDependency emailDependency)
{
_updater = updater;
_emailDependency = emailDependency;
}
