parameters: (self)
docstring: Get current worker id.
  
          Returns:
              int: node id
docstring_summary: Get current worker id.
docstring_tokens: Get current worker id .
function: def worker_index(self):
          """
          Get current worker id.
  
          Returns:
              int: node id
          """
          raise NotImplementedError("Please implement this method in child class")
function_tokens: def worker_index ( self ) : raise NotImplementedError ( "Please implement this method in child class" )