multiple trusted-keys stanzas?

[David Coulthart]

While I'm aware I can have multiple keys listed in a single trusted- 
keys stanza, I would prefer to keep groups of keys in separate files  
for easier management, but I can't use the include command inside a  
trust-keys stanza. So instead, I was thinking of putting each group of  
keys in its own trusted-keys stanza.  Does anyone know if multiple  
trusted-keys stanzas works with BIND (9.5.0-P2)?  A simple run of  
named-checkconf with such a config didn't produce any errors.  But  
will it use all of the keys or just the ones from the last trusted- 
keys stanza or ...?

Thanks,
Dave Coulthart