code: public Vector3f reflect(float x, float y, float z, Vector3f dest) {
          float dot = this.dot(x, y, z);
          dest.x = this.x - (dot + dot) * x;
          dest.y = this.y - (dot + dot) * y;
          dest.z = this.z - (dot + dot) * z;
          return dest;
      }
docs: /* (non-Javadoc)
  @see org.joml.Vector3fc#reflect(float, float, float, org.joml.Vector3f)