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See Also: ETSI GS MEC 012 V1.1.1 (2017-07) section 6.2.3-1
http://www.etsi.org/deliver/etsi_gs/MEC/001_099/012/01.01.01_60/gs_mec012v010101p.pdf

Change-Id: Icf5d59d8088cc777bcf892950989650b0bdb8c40