code: def _create_latent_variables(self):
          
  
          self.latent_variables.add_z('Vol Constant', fam.Normal(0,3,transform=None), fam.Normal(0,3))
  
          for p_term in range(self.p):
              self.latent_variables.add_z('p(' + str(p_term+1) + ')', fam.Normal(0,0.5,transform='logit'), fam.Normal(0,3))
              if p_term == 0:
                  self.latent_variables.z_list[-1].start = 3.00
              else:
                  self.latent_variables.z_list[-1].start = -4.00
  
          for q_term in range(self.q):
              self.latent_variables.add_z('q(' + str(q_term+1) + ')', fam.Normal(0,0.5,transform='logit'), fam.Normal(0,3))
              if q_term == 0:
                  self.latent_variables.z_list[-1].start = -1.50  
              else: 
                  self.latent_variables.z_list[-1].start = -4.00  
  
          self.latent_variables.add_z('v', fam.Flat(transform='exp'), fam.Normal(0,3))
          self.latent_variables.add_z('Returns Constant', fam.Normal(0,3,transform=None), fam.Normal(0,3))
          self.latent_variables.add_z('GARCH-M', fam.Normal(0,3,transform=None), fam.Normal(0,3))
  
          # Starting values
          self.latent_variables.z_list[-3].start = 2.0
docs: Creates model latent variables
  
          Returns
          ----------
          None (changes model attributes)