concept G22TickerFile extends ConceptWithChangeListeners {
  settableWithVar File file; // Which file is it
  
  // File attributes
  settableWithVar Timestamp created;
  settableWithVar Timestamp modified;
  settableWithVar Long fileSize;
  
  settableWithVar S format; // Which format is it in
  settableWithVar Cl<S> markets; // Which coins/markets are included in the file?
  settableWithVar L<TimestampRange> timeRanges; // What are the ticker time ranges included
  settableWithVar Timestamp dateAnalyzed;
}