Helper function used in service implementations to finish handling invocations of the <link linkend="gdbus-method-org-freedesktop-ModemManager1-Modem-Modem3gpp.
DisableFacilityLock">DisableFacilityLock</link> D-Bus method. If you instead want to finish handling an invocation
by returning an error, use return_error or similar.
This method will free invocation, you cannot use it afterwards.
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