Remove all non null values that are returned #114

Job	Run time
Test BaSyx Client Example	2m 35s
Test BaSyx DataBridge Example	1m 53s
Test BaSyx Dynamic RBAC Example	4m 0s
Test BaSyx Secured Example	2m 13s
Test BaSyx Kafka Example	2m 0s
Test BaSyx NGINX Example	1m 32s
Test BaSyx Operation Delegation Example	2m 11s
Test BaSyx Minimal Example	1m 55s
	18m 19s

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