code: def get_parsed_context(context_arg):
      
      if not context_arg:
          logger.debug("pipeline invoked without context arg set. For "
                       "this json parser you're looking for something "
                       "like: "
                       "pypyr pipelinename '{\"key1\":\"value1\","
                       "\"key2\":\"value2\"}'")
          return None
  
      logger.debug("starting")
      # deserialize the input context string into json
      return json.loads(context_arg)
docs: Parse input context string and returns context as dictionary.