Inherits QMap< QString, QDBusVariant >.
Mapping type generated from the specification. Convertible with QMap<QString, QDBusVariant>, but needed to have a discrete type in the Qt type system.
 
Extra information about the candidate. Allowed and mandatory keys
  depend on the transport protocol used. The following keys are commenly
  used:
  - type- u
- The type of candidate
    (Call_Stream_Candidate_Type)
- foundation- s
- The foundation of this candidate
- protocol- u
- Underlying protocol of the candidate
    (Media_Stream_Base_Proto) 
- priority- u
- Priority of the candidate (should be a number between 0 and
    65535). Most ICE implementations will prefer the highest priority
    candidate pair that manages to connect. For backwards
    compatibility with non-ICE SIP clients, the lowest priority
    candidate may be sent as a raw UDP fallback candidate.
    It is recommended that a relay candidate is used as the lowest
    priority candidate if possible. If both IPv4 and IPv6 raw udp
    fallback candidates are available, they should be set to the
    same priority and advertised to the CM at the same time. The CM
    will decide which to advertise to the remote end.
- base-ip- s
- The underlying Host address where media sent to this
    (non-host-type) candidate will eventually arrive.
- base-port- u
- The underlying Host port where media sent to this
    (non-host-type) candidate will eventually arrive.
- username- s
- Username of this candidate
    (only if credentials are per candidate)
- password- s
- Password of this candidate
    (only if credentials are per candidate)
- ttl- u
- The TTL mandated for RTP/RTCP packets sent to a multicast group
    (only valid for Multicast Streams)