From dbda613bd43093a363c481f5008b5ec83a4f7734 Mon Sep 17 00:00:00 2001
From: Ian Clelland
allowed to see values of attributes that would have been zero due
to the cross-origin restrictions. The header's value is represented
by the following ABNF [[RFC5234]] (using List Extension, [[RFC7230]]):
+ "RFC9110#rfc.section.5.6.1">List Extension, [[RFC9110]]):
Timing-Allow-Origin = 1#( origin-or-null / wildcard )