code: def pass_q_v1(self):
      
      der = self.parameters.derived.fastaccess
      new = self.sequences.states.fastaccess_new
      out = self.sequences.outlets.fastaccess
      out.q[0] += new.qjoints[der.nmbsegments]
docs: Assing the actual value of the lower joint of of the subreach
      downstream to the outlet sequence.