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: code_search.rb
    path of file: ./repos/truffleruby/lib/mri/syntax_suggest
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module SyntaxSuggest
  # Searches code for a syntax error
  #
  # There are three main phases in the algorithm:
  #
  # 1. Sanitize/format input
    
    def create_blocks_from_untracked_lines
      max_indent = frontier.next_indent_line&.indent

      while (line = frontier.next_indent_line) && (line.indent == max_indent)
        @parse_blocks_from_indent_line.each_neighbor_block(frontier.next_indent_line) do |block|
          push(block, name: "add")
        end
      end