`MultiFab.len()` #1063

Job	Run time
🔄 Update Stub Files / Stubs	5m 8s
🐧 Ubuntu / GNU@7.5	10m 39s
🐧 Ubuntu / GNU@10.5 Debug	14m 23s
🐧 Ubuntu / Clang@6.0 w/o MPI	4m 5s
🐧 Ubuntu / Clang@14.0 w/ libc++ w/ MPI	10m 47s
🐧 Ubuntu / CUDA@11.2 GNU@9.4.0	5m 34s
🐧 HIP / ROCm HIP 6.1	13m 40s
🍏 macOS / AppleClang@14.0 w/o MPI	6m 41s
🪟 Windows / Clang w/o MPI Shared Debug	35m 59s
🪟 Windows / MSVC w/o MPI Static Release	1h 23m 33s
🐧 Intel / ICPX	9m 47s
🐧 Intel / oneAPI SYCL 3D	10m 20s
🔎 CodeQL / Analyze (python)	4m 0s
🔎 CodeQL / Analyze (cpp)	40m 10s
	4h 14m 46s

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