bool symbolTableGet(const Identifier&, PropertySlot&, bool& slotIsWriteable);
bool symbolTablePut(const Identifier&, JSValue);
bool symbolTablePutWithAttributes(const Identifier&, JSValue, unsigned attributes);
bool symbolTableGet(const Identifier&, PropertySlot&, bool& slotIsWriteable);
bool symbolTablePut(const Identifier&, JSValue);
bool symbolTablePutWithAttributes(const Identifier&, JSValue, unsigned attributes);