https://davis.lbl.gov/Manuals/CHOMBO-RELEASE-3.1/structLevelData_1_1ApplyFunctor.html
Chombo + EB: LevelData T ::ApplyFunctor Struct Reference
ebstructreference
https://davis.lbl.gov/Manuals/CHOMBO-SVN/structLevelData_1_1ApplyFunctor.html
Chombo + EB + MF: LevelData T ::ApplyFunctor Struct Reference
ebmfstructreference