class Sorbet::Private::HiddenMethodFinder

def gen_source_rbi(classes, aliases)
  puts "Generating #{TMP_RBI} with #{classes.count} modules and #{aliases.count} aliases"
  serializer = Sorbet::Private::Serialize.new(constant_cache)
  buffer = []
  buffer << Sorbet::Private::Serialize.header
  # should we do something with these errors?
  capture_stderr do
    classes.each do |class_name|
      buffer << serializer.class_or_module(class_name)
    end
    aliases.each do |base, other_names|
      other_names.each do |other_name|
        buffer << serializer.alias(base, other_name)
      end
    end
  end
  File.write(TMP_RBI, buffer.join("\n"))
end