code: def filter_file(self, log, fileraw):
          
          file_type = androconf.is_android_raw(fileraw)
          if file_type in ["APK", "DEX", "DEY", "AXML", "ARSC"]:
              return True, file_type
          return False, None
docs: This method is called in order to filer a specific app
  
          :param log: an object which corresponds to a unique app
          :param bytes fileraw: the raw file as bytes
          :rtype: a tuple with 2 elements, the return value (boolean) if it is necessary to
                  continue the analysis and the file type