package org.geogebra.common.move.ggtapi.requests; import java.util.ArrayList; import java.util.List; import org.geogebra.common.move.ggtapi.models.Chapter; import org.geogebra.common.move.ggtapi.models.Material; public interface MaterialCallbackI { void onLoaded(List<Material> result, ArrayList<Chapter> meta); void onError(Throwable exception); }