iTextSharp.text.io.GroupedRandomAccessSource.GetSourceEntryForOffset C# (CSharp) Метод

        private SourceEntry GetSourceEntryForOffset(long offset) {
            if (offset >= size)
                return null;
            
            if (offset >= currentSourceEntry.firstByte && offset <= currentSourceEntry.lastByte)
                return currentSourceEntry;
            
            // hook to allow subclasses to release resources if necessary
            SourceReleased(currentSourceEntry.source);
            
            int startAt = GetStartingSourceIndex(offset);
            
            for(int i = startAt; i < sources.Length; i++){ 
                if (offset >= sources[i].firstByte && offset <= sources[i].lastByte){
                    currentSourceEntry = sources[i];
                    SourceInUse(currentSourceEntry.source);
                    return currentSourceEntry;
                }
            }
            
            return null;
            
        }