parameters: (self, filename)
docstring: @brief dump to json file
function: def dump(self, filename):
          """
          @brief dump to json file
          """
          with open(filename, 'w') as f:
              json.dump(self.toJson(), f)
function_tokens: def dump ( self , filename ) : with open ( filename , 'w' ) as f : json . dump ( self . toJson ( ) , f )