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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_glitter_app(self, glitter_app_name):
 """ Retrieve the Glitter App config for a specific Glitter App. """

        if not self.discovered:
            self.discover_glitter_apps()

        try:
            glitter_app = self.glitter_apps[glitter_app_name]
            return glitter_app
        except KeyError:
            return None