instanceTreeIsLoading 433 Source/core/svg/SVGUseElement.cpp if (instanceTreeIsLoading(m_targetElementInstance.get())) instanceTreeIsLoading 953 Source/core/svg/SVGUseElement.cpp instanceTreeIsLoading(instance); instanceTreeIsLoading 111 Source/core/svg/SVGUseElement.h bool instanceTreeIsLoading(SVGElementInstance*);