Looks up the client of an AS exchange: a directory person in product mode,
the database (created on demand in development) otherwise, with the reason
for a refusal.
Parameters
nameComponents: any
the principal's name components
realm: any
the Kerberos realm; the ambient KDC's own by default
Returns {principal:any;refusal:any}
{ principal, refusal }; refusal is { errorCode, eText }
Looks up the client of an AS exchange: a directory person in product mode, the database (created on demand in development) otherwise, with the reason for a refusal.