- virtual ~Performer_group_performer();
- virtual Translator* find_get_translator_l (String name, String id);
- virtual Translator* get_default_interpreter();
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- Translator * ancestor_l (int l = 1);
- virtual int depth_i() const;
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- virtual void process_requests();
- virtual void do_removal_processing();
- virtual void do_creation_processing();
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- bool is_bottom_performer_b() const;
- virtual Performer_group_performer* find_performer_l (String name, String id);
- virtual void do_print()const;