Returns the set of mechanisms supported by the GSS-API implementation
that may be able to process the specified name.
Each mechanism returned will recognize at least one element within the
It is permissible for this routine to be implemented within a
mechanism-independent GSS-API layer,
using the type information contained within the presented name,
and based on registration information provided by individual mechanism
This means that the returned
set may indicate that a particular mechanism will understand the name
when in fact it would refuse to accept the name as input to
(due to some property of the specific name, as opposed to the name
Thus this routine should be used only as a pre-filter for a call to a
subsequent mechanism-specific routine.
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