docs: def Interpolate(self):
      """Interpolates the pattern.
  
      Yields:
        All possible interpolation results.
      """
      for var_config in collection.DictProduct(self._var_bindings):
        for scope_config in collection.DictProduct(self._scope_bindings):
          subst = Substitution(var_config=var_config, scope_config=scope_config)
          yield subst.Substitute(self._pattern)