code: package org.optsol.project_scheduling.mrcpsp.constants.sub;
  
  import java.util.Set;
  import org.optsol.project_scheduling.utils.Precedence;
  import org.optsol.project_scheduling.utils.graph.PrecedenceGraphAugmentor;
  
  public interface IConstants_P extends IConstants_P_bar, IConstants_A, IConstants_V {
  
    default Set<Precedence> get_P() {
      return
          PrecedenceGraphAugmentor.augmentDummyArcs(
              get_A(),
              get_P_bar(),
              get_dummy_activity_project_start(),
              get_A_bar());
    }
  }
  