def _parse_append_block(response):
raw_headers = _parse_response_for_dict(response)<EOL>append_block = AppendBlockProperties()<EOL>append_block.last_modified = parser.parse(raw_headers.get('<STR_LIT>'))<EOL>append_block.etag = raw_headers.get('<STR_LIT>')<EOL>append_block.append_offset = _int_to_str(raw_headers.get('<STR_LIT>'))<EOL>append_block.committed_block_count = _int_to_str(raw_headers.get('<STR_LIT>'))<EOL>return append_block<EOL>
Extracts append block response headers.