CSV::Parser#parse_headers

# File tmp/rubies/ruby-3.3.0/lib/csv/parser.rb, line 780
def parse_headers(row)
  quoted_fields = []
  converter = lambda do |field, info|
    quoted_fields << info.quoted?
    field
  end
  headers = CSV.parse_line(row,
                           col_sep:    @column_separator,
                           row_sep:    @row_separator,
                           quote_char: @quote_character,
                           converters: [converter])
  [headers, quoted_fields]
end