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: syntax_error.rb
    path of file: ./repos/psych/lib/psych
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
require_relative 'exception'

module Psych
  class SyntaxError < Psych::Exception
    attr_reader :file, :line, :column, :offset, :problem, :context

    def initialize file, line, col, offset, problem, context
      err      = [problem, context].compact.join ' '
      filename = file || 
    
    def initialize file, line, col, offset, problem, context
      err      = [problem, context].compact.join ' '
      filename = file || '<unknown>'
      message  = "(%s): %s at line %d column %d" % [filename, err, line, col]

      @file    = file
      @line    = line
      @column  = col
      @offset  = offset
      @problem = problem
      @context = context
      super(message)
    end