static @NotNull Builder resourcePackRequest(final @NotNull ResourcePackRequest existing) {
    return new ResourcePackRequestImpl.BuilderImpl(requireNonNull(existing, "existing"));
  }
Create a builder for a resource pack request, based on an existing request.

@param existing the existing request
@return the pack request builder
@since 4.15.0
api/src/main/java/net/kyori/adventure/resource/ResourcePackRequest.java