From f1375b07e874c999ef339b7dc07ff1bc2e00f556 Mon Sep 17 00:00:00 2001
From: Merlin Nimier-David <merlin.nimier@gmail.com>
Date: Tue, 3 Mar 2020 13:57:45 +0100
Subject: [PATCH] [docs] Placeholder for volpath docs

This avoids an undefined reference warning
---
 src/integrators/volpath.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/integrators/volpath.cpp b/src/integrators/volpath.cpp
index 5d9957f67..225f57df1 100644
--- a/src/integrators/volpath.cpp
+++ b/src/integrators/volpath.cpp
@@ -16,6 +16,16 @@ NAMESPACE_BEGIN(mitsuba)
 template <typename Float, typename Spectrum, bool SpectralMis>
 class VolumetricNullPathIntegratorImpl;
 
+
+/**!
+
+.. _integrator-volpath:
+
+Volumetric path tracer with null scattering (:monosp:`volpath`)
+---------------------------------------------------------------
+
+.. todo:: Not documented yet.
+*/
 template <typename Float, typename Spectrum>
 class VolumetricNullPathIntegrator final : public MonteCarloIntegrator<Float, Spectrum> {