\brief Extra C++ template information for an entity. This can apply to:
CXIdxEntity_Function
CXIdxEntity_CXXClass
CXIdxEntity_CXXStaticMethod
CXIdxEntity_CXXInstanceMethod
CXIdxEntity_CXXConstructor
CXIdxEntity_CXXConversionFunction
CXIdxEntity_CXXTypeAlias
\brief Extra C++ template information for an entity. This can apply to: CXIdxEntity_Function CXIdxEntity_CXXClass CXIdxEntity_CXXStaticMethod CXIdxEntity_CXXInstanceMethod CXIdxEntity_CXXConstructor CXIdxEntity_CXXConversionFunction CXIdxEntity_CXXTypeAlias