private synchronized void putAll(@Nullable Table<String, String, Object> attributes) {
    if (attributes != null && this.attributes != attributes) {
      if (this.attributes == null) {
        this.attributes = HashBasedTable.create();
      }
      this.attributes.putAll(attributes);
    }
  }
Copies the attributes from this file to the given file.
jimfs/src/main/java/com/google/common/jimfs/File.java