question: public HashChainBuilder ( String hashAlgorithm ) throws Exception { this . hashAlgorithm = hashAlgorithm ; hashAlgorithmUri = getDigestAlgorithmURI ( hashAlgorithm ) ; marshaller = jaxbCtx . createMarshaller ( ) ; marshaller . setProperty ( Marshaller . JAXB_FORMATTED_OUTPUT , Boolean . TRUE ) ; }
target:  Constructs a hash chain builder.