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Add `serialize()` to various preintegration classes #6374

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Job	Run time
ubuntu-20.04-gcc-9 Debug	31m 46s
ubuntu-20.04-gcc-9 Release	26m 54s
ubuntu-20.04-clang-9 Debug	20m 5s
ubuntu-20.04-clang-9 Release	21m 56s
ubuntu-22.04-gcc-11 Debug	26m 51s
ubuntu-22.04-gcc-11 Release	23m 36s
ubuntu-22.04-clang-14 Debug	22m 36s
ubuntu-22.04-clang-14 Release	22m 58s
	3h 16m 42s