class TFileCollection: public TNamed

 TFileCollection constructor. Specify a name and title describing
 the list. If textfile is specified the file is opened and a
 TFileCollection is created containing the files in the textfile.

 Cleanup.

 Add TFileInfo to the collection.

 Add content of the TFileCollection to this collection.

 Add file names contained in the specified text file.
 The file should contain one url per line; empty lines or lines starting with '#'
 (commented lines) are ignored.
 If nfiles > 0 only nfiles files are added, starting from file 'firstfile' (>= 1).
 The method returns the number of added files.

 Add all files matching the specified pattern to the collection.
 'dir' can include wildcards after the last slash, which causes all
 matching files in that directory to be added.
 If dir is the full path of a file, only one element is added.
 Return value is the number of added files.

 Remove duplicates based on the UUID, typically after a verification.
 Return the number of entries removed.

 Creates a subset of the files that have the kStaged & !kCorrupted bit set.

 Merge all TFileCollection objects in li into this TFileCollection object.
 Updates counters at the end.
 Returns the number of merged collections or -1 in case of error.

 Update accumulated information about the elements of the collection
 (e.g. fTotalSize). If 'avgsize' > 0, use an average file size of 'avgsize'
 bytes when the size info is not available.
 Also updates the meta data information by summarizing
 the meta data of the contained objects.
 Return -1 in case of any failure, 0 if the total size is exact, 1 if
 incomplete, 2 if complete but (at least partially) estimated.

 Prints the contents of the TFileCollection.
 If option contains:
      'M'             print global meta information
      'F'             print all the files in the collection in compact form
                      (current url, default tree name|class|entries, md5)
      'L'             together with 'F', print all the files in the collection
                      in long form (uuid, md5, all URLs, all meta objects; on
                      many lines)
      "filter:[SsCc]" invokes PrintDetailed() which prints out dataset
                      content in a formatted fashion by filtering on files
                      which are (S)taged or not (s), (C)orrupted or not (c)

 Calls TUrl::SetAnchor() for all URLs contained in all TFileInfos.

 Set the bit for all TFileInfos

 Reset the bit for all TFileInfos

 Returns the tree set with SetDefaultTreeName if set
 Returns the name of the first tree in the meta data list.
 Returns 0 in case no trees are found in the meta data list.

 Returns the number of entries for the specified tree (retrieved from meta data).
 If tree is not specified, use the default tree name.
 Returns -1 in case the specified tree is not found.

 Returns the meta data object with the soecified meta name.
 Returns 0 in case specified meta data is not found.

 Moves the indicated meta data in the first position, so that
 it becomes efectively the default.

 Removes the indicated meta data object in all TFileInfos and this object
 If no name is given all metadata is removed

 Sort the collection.

 Export the relevant info as a string; use 'name' as collection name,
 if defined, else use GetName().
 The output object must be destroyed by the caller

 Return the subset of files served by 'server'. The sysntax for 'server' is
 the standard URI one, i.e. [<scheme>://]<host>[:port]

 Return a map of TFileCollections with the files on each data server,
 excluding servers in the comma-separated list 'exclude'.
 If curronly is kTRUE, only the URL flagged as current in the TFileInfo
 are considered.

 Add's a meta data object to the file collection object. The object will be
 adopted by the TFileCollection and should not be deleted by the user.
 Typically objects of class TFileInfoMeta or derivatives should be added,
 but any class is accepted.
 NB : a call to TFileCollection::Update will remove these objects unless the
      bit TFileInfoMeta::kExternal is set.
 Returns kTRUE if successful, kFALSE otherwise.