You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: parser.rb
    path of file: ./repos/regexp-examples/lib/regexp-examples
    
    the code of the file until where you have to start completion: require_relative 'parser_helpers/parse_group_helper'
require_relative 'parser_helpers/parse_after_backslash_group_he
    
    def parse_repeater(group)
      case next_char
      when '*'
        parse_star_repeater(group)
      when '+'
        parse_plus_repeater(group)
      when '?'
        parse_question_mark_repeater(group)
      when '{'
        parse_range_repeater(group)
      else
        parse_one_time_repeater(group)
      end