code: public Vector3f mul(Matrix3fc mat, Vector3f dest) {
          float rx = mat.m00() * x + mat.m10() * y + mat.m20() * z;
          float ry = mat.m01() * x + mat.m11() * y + mat.m21() * z;
          float rz = mat.m02() * x + mat.m12() * y + mat.m22() * z;
          dest.x = rx;
          dest.y = ry;
          dest.z = rz;
          return dest;
      }
docs: /* (non-Javadoc)
  @see org.joml.Vector3fc#mul(org.joml.Matrix3fc, org.joml.Vector3f)