private FileChannel openChannel() {
    try {
      return FileChannel.open(path, StandardOpenOption.READ);
    } catch (IOException e) {
      throw new UncheckedIOException(e);
    }
  }
Returns details from the header block for this osm.pbf file.

@throws IllegalArgumentException if an error is encountered reading the file
planetiler-core/src/main/java/com/onthegomap/planetiler/reader/osm/OsmInputFile.java