interpolator.addValueSource( new PrefixedObjectValueSource( "session", mavenSession ) );
final Settings settings = mavenSession.getSettings();
if ( settings != null )
{
interpolator.addValueSource( new PrefixedObjectValueSource( "settings", settings ) );
interpolator.addValueSource( new SingleResponseValueSource( "localRepository",
settings.getLocalRepository() ) );
}
}