* (Part of the RichMediaContent.)
* @param configuration a configuration dictionary
*/
public PdfIndirectReference addConfiguration(RichMediaConfiguration configuration) throws IOException {
if (configurations == null)
throw new IllegalPdfSyntaxException(
"You can't add configurations to reused RichMediaContent.");
PdfIndirectReference ref = writer.addToBody(configuration).getIndirectReference();
configurations.add(ref);
return ref;
}