code: public Vector3d add(Vector3dc v, Vector3d dest) {
          dest.x = x + v.x();
          dest.y = y + v.y();
          dest.z = z + v.z();
          return dest;
      }
docs: /* (non-Javadoc)
  @see org.joml.Vector3dc#add(org.joml.Vector3dc, org.joml.Vector3d)