restapi - sdk jar - version

I would like to make calls to restapi, and would also like to take advantage of the com.silanis.esl.api.model.* model objects available in the java sdk jar our /api/sysinfo shows: { "schema": "16.10.4", "version": "16.6.16", "timestamp": "2017-12-12 23:32+0000" } This page has 2 versions of jar available thru maven: https://docs.esignlive.com/content/c_integrator_s_guide/sdk/a_introduction/getting_started_with_sdks.htm Should I use 10.13 jar or the 11.5 jar?