Answer a String containing the required segment of the file
Answer a String containing the given subsegment of the file. As for streams, from and to are 0-based.
Answer the File object for the file containing the segment
Answer the name of the file containing the segment
Answer the position in the file where the segment starts
If the path starts with startPath, remove that part of the path. map is a Dictionary that is used so that equal filenames stay equal, without increasing the amount of memory that the image uses.
Answer the length of the segment
Evaluate aBlock passing it the FileStream in which the segment identified by the receiver is stored