code: def pick_q_v1(self):
      
      inl = self.sequences.inlets.fastaccess
      new = self.sequences.states.fastaccess_new
      new.qjoints[0] = 0.
      for idx in range(inl.len_q):
          new.qjoints[0] += inl.q[idx][0]
docs: Assign the actual value of the inlet sequence to the upper joint
      of the subreach upstream.