Canonicalizer20010315ExclOmitComments c14n =
new Canonicalizer20010315ExclOmitComments();
if (os != null) {
c14n.setWriter(os);
}
byte[] result = c14n.engineCanonicalize(input, inclusiveNamespaces);
XMLSignatureInput output = new XMLSignatureInput(result);
if (os != null) {
output.setOutputStream(os);
}