def setsetsetsetsetsetsetset(key, value)
filename = filename_from_url(key)
mkpath(filename)
if value.respond_to?(:meta)
filename_meta = "#{filename}.meta"
meta = value.meta
meta[:status] = value.status if value.respond_to?(:status)
meta[:content_type] = value.content_type if value.respond_to?(:content_type)
meta[:base_uri] = value.base_uri if value.respond_to?(:base_uri)
File.open(filename_meta, 'wb') {|f| YAML::dump(meta, f)}
end
File.open(filename, 'wb'){|f| f.write value.read }
value.rewind
value
end