NF_SHARE_PTRThis code example creates a singleton instance of RecordManager using NF_SHARE_PTR. When GetRecordManager is called, it checks if the static pointer is null and if so, it creates a new instance of RecordManager and returns it. By doing this, we ensure that only one instance of RecordManager is created throughout the lifetime of the program. The package library for NF_SHARE_PTR is probably Boost C++ Libraries. Boost is a set of libraries for the C++ programming language that provide support for tasks such as linear algebra, multithreading, GUI programming, and more. NF_SHARE_PTR is one of the smart pointer classes in Boost.GetRecordManager() { static NF_SHARE_PTR recordManager = nullptr; if (!recordManager) { recordManager.reset(new RecordManager()); } return recordManager; }