def_notifier(prefix = "", output_method = StdioOutputMethod.new)
Class Public methods
Define a new Notifier output source, returning
a new CompositeNotifier with
the given prefix and output_method.
The optional prefix will be appended to all objects being
inspected during output, using the given output_method as the
output source. If no output_method is given, StdioOuputMethod
will be used, and all expressions will be sent directly to STDOUT without
any additional formatting.