get_interface_name

Gets the name of the D-Bus interface the method was invoked on.

This can be `NULL` if it was not specified by the sender. See [callback@Gio.DBusInterfaceMethodCallFunc] or the D-Bus Specification for details on when this can happen and how it should be handled.

If this method call is a property Get, Set or GetAll call that has been redirected to the method call handler then "org.freedesktop.DBus.Properties" will be returned. See DBusInterfaceVTable for more information.

Parameters:

this	A DBusMethodInvocation.

Returns:

A string. Do not free, it is owned by this.