Move the public fields at https://github.com/Framework-R-D/phlex/blob/main/form/root_storage/root_rntuple_write_container.hpp#L61 into private fields with accessor functions. The accessor functions will just provide a reference to unique_ptr<> for now because root_rfield_write_container needs to initialize these members. These accessor functions have the bonus that we can update them with some extra initialization work in the far future.
Move the public fields at https://github.com/Framework-R-D/phlex/blob/main/form/root_storage/root_rntuple_write_container.hpp#L61 into private fields with accessor functions. The accessor functions will just provide a reference to
unique_ptr<>for now becauseroot_rfield_write_containerneeds to initialize these members. These accessor functions have the bonus that we can update them with some extra initialization work in the far future.