private static String encodeDeletion(Deletion del) {
    return del.getType()
        + SEPARATOR
        + del.getPathString()
        + SEPARATOR
        + del.getFileOffset()
        + SEPARATOR
        + del.getStartTime()
        + SEPARATOR
        + del.getEndTime();
  }
Construct a LocalTextModificationAccessor using a file specified by filePath.

@param filePath the path of the file that is used for storing modifications.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/modification/v1/io/LocalTextModificationAccessor.java