docs: def _parse_vars_tbl(self, var_tbl):
          """Parse a table of variable bindings (dictionary with key = variable name)"""
  
          # Find the length of each variable to infer T
          T = self._check_forward_mode_input_dict(var_tbl)
          # The shape of X based on T and m
          shape = (T, 1)
  
          # Initialize X to zeros in the correct shape        
          X = np.zeros(shape)
          X[:,0] = var_tbl[self.var_name]
          return X