module Roda::RodaPlugins::Assets::ClassMethods

def asset_digest(content)

want to use a unique value.
a different digest type or to return a static string if you don't
SHA256 hash of the content. This method can be overridden to use
Return a unique id for the given content. By default, uses the 
def asset_digest(content)
  algo = assets_opts[:sri] || :sha256
  digest = begin
    require 'openssl'
    ::OpenSSL::Digest
  # :nocov:
  rescue LoadError
    require 'digest/sha2'
    ::Digest
  # :nocov:
  end
  digest.const_get(algo.to_s.upcase).hexdigest(content)
end