message: additional empty line in the header file
diff: @@ -40,6 +40,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  #include <ginkgo/core/matrix/dense.hpp>
  #include <ginkgo/core/stop/stopping_status.hpp>
  +
  namespace gko {
  namespace kernels {
  namespace bicg {
  