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

require_relative "left_right_lex_count"

if !SyntaxSuggest.use_prism_parser?
  require_relative "ripper_errors"
end

module SyntaxSuggest
  class GetParseErrors
    def self.errors(source)
      if SyntaxSugg
    
    def why(miss)
      case miss
      when "keyword"
        "Unmatched `end', missing keyword (`do', `def`, `if`, etc.) ?"
      when "end"
        "Unmatched keyword, missing `end' ?"
      else
        inverse = INVERSE.fetch(miss) {
          raise "Unknown explain syntax char or key: #{miss.inspect}"
        }
        "Unmatched `#{inverse}', missing `#{miss}' ?"
      end