class Asciidoctor::Converter::CompositeConverter

def initialize backend, *converters, backend_traits_source: nil
  @backend = backend
  (@converters = converters).each {|converter| converter.composed self if converter.respond_to? :composed }
  init_backend_traits backend_traits_source.backend_traits if backend_traits_source
  @converter_cache = ::Hash.new {|hash, key| hash[key] = find_converter key }
end