ven Model,
 it must also be equal to and have the same hash code as the given model.
 <p>
 However, this model may be equal to and have the same hash code as a given model
 but still return <code>false</code> from this method.
 This method optionally allows you to differentiate between Models that load the same image
 via multiple different means.
 For example one Model might load the image from server A and another model might load
 the same image from server B.
 The models must be equal to each other with