Add the ping method to the interface #21

Job	Run time
Coding Standards (8.1, highest)	40s
Code Coverage (8.3, highest)	1m 23s
Mutation tests (8.3, highest)	1m 12s
Dependency Analysis (8.1, lowest)	54s
Unit tests (8.1, lowest)	47s
Static Code Analysis (8.1, lowest)	46s
Unit tests (8.1, highest)	39s
Dependency Analysis (8.1, highest)	43s
Unit tests (8.2, lowest)	41s
Static Code Analysis (8.1, highest)	46s
Dependency Analysis (8.2, lowest)	52s
Unit tests (8.2, highest)	50s
Static Code Analysis (8.2, lowest)	44s
Dependency Analysis (8.2, highest)	48s
Unit tests (8.3, lowest)	41s
Static Code Analysis (8.2, highest)	46s
Dependency Analysis (8.3, lowest)	44s
Unit tests (8.3, highest)	45s
Static Code Analysis (8.3, lowest)	50s
Dependency Analysis (8.3, highest)	1m 11s
Static Code Analysis (8.3, highest)	49s
	17m 31s

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