code: function obsAngleAddr() {
          return opts.strict ? null : wrap('obs-angle-addr', and(
              invis(opt(cfws)),
              literal('<'),
              obsRoute,
              addrSpec,
              literal('>'),
              invis(opt(cfws))
          )());
      }
docs: 4.4. Obsolete Addressing obs-angle-addr  =   [CFWS] "<" obs-route addr-spec ">" [CFWS]