Returns the sector a GNAP client instance's opaque identifiers are made for: sector:<host> of its registered sector_identifier_uri, or client:<identifier>.
sector:<host>
sector_identifier_uri
client:<identifier>
the GNAP client instance's application identifier
the sector label
Returns the sector a GNAP client instance's opaque identifiers are made for:
sector:<host>of its registeredsector_identifier_uri, orclient:<identifier>.