# File lib/method_source/code_helpers.rb, line 20
    def expression_at(file, line_number, options={})
      options = {
        :strict  => false,
        :consume => 0
      }.merge!(options)

      lines = file.is_a?(Array) ? file : file.each_line.to_a

      relevant_lines = lines[(line_number - 1)..-1] || []

      extract_first_expression(relevant_lines, options[:consume])
    rescue SyntaxError => e
      raise if options[:strict]

      begin
        extract_first_expression(relevant_lines) do |code|
          code.gsub(/\#\{.*?\}/, "temp")
        end
      rescue SyntaxError => e2
        raise e
      end
    end