code: def getConnectedSynapses(self, columnIndex, connectedSynapses):
      
      assert(columnIndex < self._numColumns)
      connectedSynapses[:] = self._connectedSynapses[columnIndex]
docs: :param connectedSynapses: (list) will be overwritten
      :returns: (iter) the connected synapses for a given column.
                ``connectedSynapses`` size must match the number of inputs