docs: def contents_equal(self, other, **kwargs):
          """
          Test the equality of the fileset contents with another fileset. If the
          fileset's format implements a 'contents_equal' method than that is used
          to determine the equality, otherwise a straight comparison of the
          checksums is used.
  
          Parameters
          ----------
          other : Fileset
              The other fileset to compare to
          """
          if hasattr(self.format, 'contents_equal'):
              equal = self.format.contents_equal(self, other, **kwargs)
          else:
              equal = (self.checksums == other.checksums)
          return equal