title: The import de.hybris.platform.core.model.user.UserModel cannot be resolved in hybris
body: <p>all. At first, everything was working fine but after <code>ant build</code> The import de.hybris.platform.core.model.user.UserModel cannot be resolved error appeared. I checked the location and there is no UserModel anymore.  I did <code>ant clean all</code> it build successfully, in eclipse did <code>project -&gt; clean</code> several times but error steel exists. Any idea how to solve this. </p>