[dune-fem] dune-fem 1.4 warning missing module dune-alugrid

[Agnese, Marco]

Hello,
I have just installed the new dune-fem 1.4. 
During the installation I received the following warning

WARNING: could not find module dune-alugrid, module is also unknown to pkg-config. Maybe you need to adjust PKG_CONFIG_PATH! dune-alugrid is suggested by dune-fem

but I never heard before about this module. What is the functionality of this module? Moreover where I can find the module to download? I tried to google it but there is no result. 

Thank you very much,
regards,
Marco.