docs: def get_independencies(self, latex=False):
          """
          Computes independencies in the DAG, by checking d-seperation.
  
          Parameters
          ----------
          latex: boolean
              If latex=True then latex string of the independence assertion
              would be created.
  
          Examples
          --------
          >>> from pgmpy.base import DAG
          >>> chain = DAG([('X', 'Y'), ('Y', 'Z')])
          >>> chain.get_independencies()
          (X _|_ Z | Y)
          (Z _|_ X | Y)
          """
          independencies = Independencies()
          for start in (self.nodes()):
              rest = set(self.nodes()) - {start}
              for r in range(len(rest)):
                  for observed in itertools.combinations(rest, r):
                      d_seperated_variables = rest - set(observed) - set(
                          self.active_trail_nodes(start, observed=observed)[start])
                      if d_seperated_variables:
                          independencies.add_assertions([start, d_seperated_variables, observed])
  
          independencies.reduce()
  
          if not latex:
              return independencies
          else:
              return independencies.latex_string()