private boolean isExistingGrammar(XSDDescription desc, boolean ignoreConflict) { SchemaGrammar sg = fGrammarBucket.getGrammar(desc.getTargetNamespace()); if (sg == null) { return findGrammar(desc, ignoreConflict) != null; } else if (sg.isImmutable()) { return true; } else { try { return sg.getDocumentLocations().contains(XMLEntityManager.expandSystemId(desc.getLiteralSystemId(), desc.getBaseSystemId(), false)); } catch (MalformedURIException e) { return false; } } }