# sub (<spec>) {} becomes a dispatcher
# sub {} is a PSGI app and can be returned as is
# '<spec>' => sub {} becomes a dispatcher
- # $obj isa WD:Predicates::Proxy => sub { ... } - become a dispatcher
+ # $obj isa WD:Predicates::Matcher => sub { ... } - become a dispatcher
# $obj w/to_app method is a Plack::App-like thing - call it to get a PSGI app
#