docs: def get_synidx(self, cellindex):
          """
          Local function, draw and return synapse locations corresponding
          to a single cell, using a random seed set as
          `POPULATIONSEED` + `cellindex`.
  
  
          Parameters
          ----------
          cellindex : int
              Index of cell object.
  
  
          Returns
          -------
          synidx : dict
              `LFPy.Cell` compartment indices
  
  
          See also
          --------
          Population.get_all_synIdx, Population.fetchSynIdxCell
  
          """
          #create a cell instance
          cell = self.cellsim(cellindex, return_just_cell=True)
  
  
          #local containers
          synidx = {}
  
          #get synaptic placements and cells from the network,
          #then set spike times,
          for i, X in enumerate(self.X):
              synidx[X] = self.fetchSynIdxCell(cell=cell,
                                               nidx=self.k_yXL[:, i],
                                               synParams=self.synParams.copy())
  
          return synidx