Noel Grandin developed a static analysis feature for the CollaboraOnline/online repository, focusing on enforcing socket pointer ownership policies within C++ code. He implemented an AST matcher in a Clang plugin to ensure that only the SocketPoll class could use std::shared_ptr<Socket>, while all other classes were restricted to std::weak_ptr<Socket>. By refining the type matching logic to explicitly include only std::shared_ptr and exclude std::weak_ptr, Noel improved the precision of static analysis and reduced potential memory management risks. This work leveraged his expertise in C++ development, AST matching, and static analysis to enhance code safety and maintainability.