code: def defineBiophysics(self):
          
          # Insert active Hodgkin-Huxley current in the soma
          self.soma.insert('hh')
          self.soma.gnabar_hh = 0.12  # Sodium conductance in S/cm2
          self.soma.gkbar_hh = 0.036  # Potassium conductance in S/cm2
          self.soma.gl_hh = 0.003    # Leak conductance in S/cm2
          self.soma.el_hh = -70       # Reversal potential in mV
          
          self.dend.insert('pas')
          self.dend.g_pas = 0.001  # Passive conductance in S/cm2
          self.dend.e_pas = -65    # Leak reversal potential mV
          self.dend.nseg = 1000
docs: Assign the membrane properties across the cell.