GI_INFO_TYPE_CALLBACK should have is_pointer set?

[Joanmarie Diggs <jdiggs igalia com>]

Hey guys.

I'm running up against the inability to set (or even examine) the
method_call field of a GDBusInterfaceVTable:

  >>> from gi.repository import Gio
  >>> vtable = Gio.DBusInterfaceVTable()
  >>> vtable.method_call

  ** (process:3806): WARNING **: Field method_call: Interface type 2 
should have is_pointer set
  Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
  RuntimeError: unable to get the value

I accept that is_pointer should be set. ;) By whom/where?

Thanks in advance!
--joanie