public interface HashFileGenerator
com.google.common.base.Optional<java.lang.String> hash(com.google.common.base.Optional<java.net.URL> url)
throws java.io.IOException
java.io.IOExceptioncom.google.common.base.Optional<java.lang.String> hashMulti(java.util.Collection<java.net.URL> urls)
throws java.io.IOException
java.io.IOException