isValidPathHash static method
Validates if a path hash follows the correct hierarchical format
Implementation
static bool isValidPathHash(String pathHash) {
if (pathHash.isEmpty) return false;
final parts = pathHash.split('.');
for (final part in parts) {
if (part.isEmpty || int.tryParse(part) == null || int.parse(part) < 1) {
return false;
}
}
return true;
}