String propName = environment.getFirstArgument();
SVNPropertyValue propValue = null;
SVNLookClient client = environment.getClientManager().getLookClient();
if (environment.isRevision()) {
if (environment.isRevProp()) {
propValue = client.doGetRevisionProperty(environment.getRepositoryFile(),
propName, getRevisionObject());
} else {
propValue = client.doGetProperty(environment.getRepositoryFile(), propName,
environment.getSecondArgument(), getRevisionObject());
}