docs: def get_topic_keyword_dictionary():
      """
      Opens the topic-keyword map resource file and returns the corresponding python dictionary.
  
      - Input:  - file_path: The path pointing to the topic-keyword map resource file.
  
      - Output: - topic_set: A topic to keyword python dictionary.
      """
      topic_keyword_dictionary = dict()
      file_row_gen = get_file_row_generator(get_package_path() + "/twitter/res/topics/topic_keyword_mapping" + ".txt",
                                            ",",
                                            "utf-8")
      for file_row in file_row_gen:
          topic_keyword_dictionary[file_row[0]] = set([keyword for keyword in file_row[1:]])
  
      return topic_keyword_dictionary