code: def get_edges(self, indexed=None):
          
          
          if indexed is None:
              if self._edges is None:
                  self._compute_edges(indexed=None)
              return self._edges
          elif indexed == 'faces':
              if self._edges_indexed_by_faces is None:
                  self._compute_edges(indexed='faces')
              return self._edges_indexed_by_faces
          else:
              raise Exception("Invalid indexing mode. Accepts: None, 'faces'")
docs: Edges of the mesh
          
          Parameters
          ----------
          indexed : str | None
             If indexed is None, return (Nf, 3) array of vertex indices,
             two per edge in the mesh.
             If indexed is 'faces', then return (Nf, 3, 2) array of vertex
             indices with 3 edges per face, and two vertices per edge.
  
          Returns
          -------
          edges : ndarray
              The edges.