Method confirm

include/matchit.h:1154–1161

                    }
                }
                constexpr void confirm(int32_t depth)
                {
                    if (mDepth > depth || mDepth == 0)
                    {
                        assert(depth == mDepth - 1 || depth == mDepth || mDepth == 0);
                        mDepth = depth;
                    }
                }
            };
            class IdUtil
            {