parameters: (self, method_name)
return_statement: return ' '.join(method.getExpressionCacheKeyList())
docstring: Get the key string which is used to cache results
          for the given expression.
docstring_summary: Get the key string which is used to cache results
          for the given expression.
docstring_tokens: Get the key string which is used to cache results for the given expression .
function: def getExpressionCacheKey(self, method_name):
      """ Get the key string which is used to cache results
          for the given expression.
      """
      method =  self._getOb(method_name)
  
      if method is None:
        return ""
      return ' '.join(method.getExpressionCacheKeyList())
function_tokens: def getExpressionCacheKey ( self , method_name ) : method = self . _getOb ( method_name ) if method is None : return "" return ' ' . join ( method . getExpressionCacheKeyList ( ) )