}
private void dumpFids() {
int i = 1;
for (Identifier fid : m_features.keySet()) {
FeatureAccessor accessor = m_features.get(fid);
Feature feature = accessor.getFeature();
Property p = feature.getProperty(m_printProperty);
Object value = p != null ? p.getValue() : "<no such property>";
System.out.printf("%d: fid: %s %s=%s%n",
i, feature.getIdentifier().getID(), m_printProperty, value);
i++;