private string ReadDebugInformationLocationFromDebugTableDirectoryData() {
   if (this.OptionalHeaderDirectoryEntries.DebugTableDirectory.Size != 0x1c) return string.Empty;
   var debugDirectoryReader = new MemoryReader(this.DirectoryToMemoryBlock(this.OptionalHeaderDirectoryEntries.DebugTableDirectory));
   PeDebugDirectory debugDir = new PeDebugDirectory();
   debugDir.Characteristics = debugDirectoryReader.ReadUInt32();
   debugDir.TimeDateStamp = debugDirectoryReader.ReadUInt32();
   debugDir.MajorVersion = debugDirectoryReader.ReadUInt16();
   debugDir.MinorVersion = debugDirectoryReader.ReadUInt16();
   debugDir.Type = debugDirectoryReader.ReadUInt32();
   debugDir.SizeOfData = debugDirectoryReader.ReadUInt32();
   debugDir.AddressOfRawData = debugDirectoryReader.ReadUInt32();
   debugDir.PointerToRawData = debugDirectoryReader.ReadUInt32();
   if (debugDir.SizeOfData == 0 ) return string.Empty;
   var dataBlock = new MemoryBlock(this.BinaryDocumentMemoryBlock.Pointer + debugDir.PointerToRawData, debugDir.SizeOfData);
   var ptrToDebugInfo = this.BinaryDocumentMemoryBlock.Pointer + debugDir.PointerToRawData;
   var ptrToDebugInfoEnd = this.BinaryDocumentMemoryBlock.Pointer + debugDir.PointerToRawData + debugDir.SizeOfData;
   if (ptrToDebugInfo >= this.BinaryDocumentMemoryBlock.Pointer + this.BinaryDocumentMemoryBlock.Length - 28) {
     //TODO: error
     return string.Empty;
   }
   if (ptrToDebugInfoEnd > this.BinaryDocumentMemoryBlock.Pointer + this.BinaryDocumentMemoryBlock.Length) {
     //TODO: error
     return string.Empty;
   }
   var debugDataReader = new MemoryReader(dataBlock);
   var magic = debugDataReader.ReadUInt32();
   if (magic != 0x53445352) { //RSDS in little endian format
     //TODO: error
     return string.Empty;
   }
   var unknown1 = debugDataReader.ReadUInt32();
   var unknown2 = debugDataReader.ReadUInt32();
   var unknown3 = debugDataReader.ReadUInt32();
   var unknown4 = debugDataReader.ReadUInt32();
   var unknown5 = debugDataReader.ReadUInt32();
   return debugDataReader.ReadASCIINullTerminated();
 }
 bool ReadStreamHeaders(
   ref MemoryReader memReader
 )
   //^ requires this.ReaderState >= ReaderState.PEFile;
 {
   int numberOfStreams = this.StorageHeader.NumberOfStreams;
   this.StreamHeaders = new StreamHeader[numberOfStreams];
   StreamHeader[] streamHeaders = this.StreamHeaders;
   for (int i = 0; i < numberOfStreams; ++i) {
     if (memReader.RemainingBytes < COR20Constants.MinimumSizeofStreamHeader) {
       this.ErrorContainer.AddDirectoryError(Directories.Cor20HeaderMetaData, memReader.Offset, MetadataReaderErrorKind.StreamHeaderTooSmall);
       return false;
     }
     streamHeaders[i].Offset = memReader.ReadUInt32();
     streamHeaders[i].Size = memReader.ReadInt32();
     //  Review: Oh well there is no way i can test if we will read correctly. However we can check it after reading and aligning...
     streamHeaders[i].Name = memReader.ReadASCIINullTerminated();
     memReader.Align(4);
     if (memReader.RemainingBytes < 0) {
       this.ErrorContainer.AddDirectoryError(Directories.Cor20HeaderMetaData, memReader.Offset, MetadataReaderErrorKind.NotEnoughSpaceForStreamHeaderName);
       return false;
     }
   }
   return true;
 }
    private PEFileDebugInformation ReadDebugInformationLocationFromDebugTableDirectoryData() {
      if (this.OptionalHeaderDirectoryEntries.DebugTableDirectory.Size != 0x1c) return new PEFileDebugInformation();
      var debugDirectoryReader = new MemoryReader(this.DirectoryToMemoryBlock(this.OptionalHeaderDirectoryEntries.DebugTableDirectory));
      PeDebugDirectory debugDir = new PeDebugDirectory();
      debugDir.Characteristics = debugDirectoryReader.ReadUInt32();
      debugDir.TimeDateStamp = debugDirectoryReader.ReadUInt32();
      debugDir.MajorVersion = debugDirectoryReader.ReadUInt16();
      debugDir.MinorVersion = debugDirectoryReader.ReadUInt16();
      debugDir.Type = debugDirectoryReader.ReadUInt32();
      debugDir.SizeOfData = debugDirectoryReader.ReadUInt32();
      debugDir.AddressOfRawData = debugDirectoryReader.ReadUInt32();
      debugDir.PointerToRawData = debugDirectoryReader.ReadUInt32();
      if (debugDir.SizeOfData == 0) return new PEFileDebugInformation();
      var dataBlock = new MemoryBlock(this.BinaryDocumentMemoryBlock.Pointer + debugDir.PointerToRawData, debugDir.SizeOfData);
      var ptrToDebugInfo = this.BinaryDocumentMemoryBlock.Pointer + debugDir.PointerToRawData;
      var ptrToDebugInfoEnd = this.BinaryDocumentMemoryBlock.Pointer + debugDir.PointerToRawData + debugDir.SizeOfData;
      if (ptrToDebugInfo >= this.BinaryDocumentMemoryBlock.Pointer + this.BinaryDocumentMemoryBlock.Length - 28) {
        //TODO: error
        return new PEFileDebugInformation();
      }
      if (ptrToDebugInfoEnd > this.BinaryDocumentMemoryBlock.Pointer + this.BinaryDocumentMemoryBlock.Length) {
        //TODO: error
        return new PEFileDebugInformation();
      }
      var debugDataReader = new MemoryReader(dataBlock);
      var magic = debugDataReader.ReadUInt32();
      if (magic != 0x53445352) { //RSDS in little endian format
        //TODO: error
        return new PEFileDebugInformation();
      }

      var guid = debugDataReader.PeekGuid(0);
      debugDataReader.SkipBytes(16);
      UInt32 age = debugDataReader.ReadUInt32();
      string fileName = debugDataReader.ReadASCIINullTerminated();

      var guidHex = guid.ToString("N");
      string ageHex = age.ToString("X");
      string version = guidHex + ageHex;

      PEFileDebugInformation information = new PEFileDebugInformation();
      information.Signature = guid;
      information.Age = age;
      information.PdbVersion = version;
      information.PdbFileName = fileName;
      return information;
    }