def __repr__(self):
        return "<NamedRequirements({}{})>".format(
            self.name,
            ", filename='{}'".format(self.filename.name) if self.filename
            else "")
def __init__(self, parent, window):
		self._parent = parent
		self._window = window
		self._application = self._parent._application

		# create user interface
		self._container = gtk.VBox(False, 5)
		self._controls = gtk.HBox(False, 5)

		separator = gtk.HSeparator()

		# pack interface
		self._container.pack_end(separator, False, False, 0)
		self._container.pack_end(self._controls, False, False, 0)