A private helper method
The get_attribute_ns method retrieves a method by its namespace and name. Thus it is possible to reliably identify an attribute even if an XML processor has changed the prefix.
Method contributed by Henrik Martensson
Finds all tuples in the TupleBag which when treated as templates, match tuple and are alive.
The full path to the gem (install path + full name).
Full paths in the gem to add to $LOAD_PATH when this gem is activated.
Creates an option parser and fills it in with the help info for the command.