Tests

doc(call): add call examples #57

Job	Run time
tests-crud-integration (2.11.8-ubuntu20.04)	3m 46s
tests-box-integration (3.0.1-old)	3m 40s
tests-crud-integration (3.0.1-old)	3m 43s
tests-box-integration (2.11.8-ubuntu20.04)	3m 41s
tests-unit	3m 59s
	18m 49s

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