new service to handle multi entity levels#8

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thomas-kl1 wants to merge 6 commits intomasterfrom

develop-service

Commits on Dec 11, 2021

new service to handle multi entity levels
thomas-kl1
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Commits on Dec 12, 2021

add service factory + update facade + deprecated notice
thomas-kl1
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Commits on Dec 13, 2021

add nullable params
thomas-kl1
committed

Commits on Dec 16, 2021

Commits on Mar 15, 2022

Add query params to get operation
thomas-kl1
committed