Seems that the documentation for Near Cache functionality is out of dated, as there it describes and gives code snapshots for EAGER and LAZY near cache modes, but from the code and tests I can see that currently only INVALIDATED and DISABLED near cache modes are available.
I am referring to section: https://access.qa.redhat.com/documentation/en-us/red_hat_jboss_data_grid/7.1/html-single/developer_guide//#near_caching