This module is part of the low-level DBus binding APIs, and
should not be used by application code. No guarentees are made
about APIs under the "Net::DBus::Binding::" namespace being
stable across releases.
This module provides a convenience constructor for creating
a message representing a signal.
Creates a new message, representing a signal [to be] emitted by
the object located under the path given by the "object_path"
parameter. The name of the signal is given by the "signal_name"
parameter, and is scoped to the interface given by the
"interface" parameter.