skip_needless_lines

# File lib/csv/parser.rb, line 725
    def skip_needless_lines
      return unless @skip_lines

      while true
        @scanner.keep_start
        line = @scanner.scan_all(@not_line_end) || "".encode(@encoding)
        line << @row_separator if parse_row_end
        if skip_line?(line)
          @lineno += 1
          @scanner.keep_drop
        else
          @scanner.keep_back
          return
        end
      end
    end