parameters: (self, starting_points=None)
return_statement: return self._dfs_traverse(self._store, starting_points, False)
docstring: Return the previous populated address in a JA
          :param starting_points: An array indicating starting address in the JA
docstring_summary: Return the previous populated address in a JA
          :param starting_points: An array indicating starting address in the JA
docstring_tokens: Return the previous populated address in a JA : param starting_points : An array indicating starting address in the JA
function: def prev_index(self, starting_points=None):
          """
          Return the previous populated address in a JA
          :param starting_points: An array indicating starting address in the JA
          """
          return self._dfs_traverse(self._store, starting_points, False)
function_tokens: def prev_index ( self , starting_points = None ) : return self . _dfs_traverse ( self . _store , starting_points , False )