docs: def _from_binary_idx_e(cls, binary_stream, content_type=None):
      """See base class."""
      #TODO don't save this here and overload later?
      #TODO confirm if this is really generic or is always a file reference
      ''' Undefined - 8
          Length of entry - 2
          Length of content - 2
          Flags - 4
          Content - variable
          VCN of child node - 8 (exists only if flag is set, aligned to a 8 byte boundary)
      '''
      repr_size = cls._REPR.size
      generic, entry_len, cont_len, flags = cls._REPR.unpack(binary_stream[:repr_size])
      vcn_child_node = (None,)
  
      #if content is known (filename), create a new object to represent the content
      if content_type is AttrTypes.FILE_NAME and cont_len:
          binary_content = FileName.create_from_binary(binary_stream[repr_size:repr_size+cont_len])
      else:
          binary_content = binary_stream[repr_size:repr_size+cont_len].tobytes()
      #if there is a next entry, we need to pad it to a 8 byte boundary
      if flags & IndexEntryFlags.CHILD_NODE_EXISTS:
          temp_size = repr_size + cont_len
          boundary_fix = (entry_len - temp_size) % 8
          vcn_child_node = cls._REPR_VCN.unpack(binary_stream[temp_size+boundary_fix:temp_size+boundary_fix+8])
  
      nw_obj = cls((generic, entry_len, cont_len, IndexEntryFlags(flags), binary_content, vcn_child_node))
  
      _MOD_LOGGER.debug("Attempted to unpack Index Entry from \"%s\"\nResult: %s", binary_stream.tobytes(), nw_obj)
  
      return nw_obj