code: public Vector4f mul(float scalar, Vector4f dest) {
          dest.x = x * scalar;
          dest.y = y * scalar;
          dest.z = z * scalar;
          dest.w = w * scalar;
          return dest;
      }
docs: /* (non-Javadoc)
  @see org.joml.Vector4fc#mul(float, org.joml.Vector4f)