code: def GetStream(data=None):
          
          if len(__mstreams_available__) == 0:
              if data:
                  mstream = MemoryStream(data)
                  mstream.seek(0)
              else:
                  mstream = MemoryStream()
              __mstreams__.append(mstream)
              return mstream
  
          mstream = __mstreams_available__.pop()
  
          if data is not None and len(data):
              mstream.Cleanup()
              mstream.write(data)
  
          mstream.seek(0)
  
          return mstream
docs: Get a MemoryStream instance.
  
          Args:
              data (bytes, bytearray, BytesIO): (Optional) data to create the stream from.
  
          Returns:
              MemoryStream: instance.