https://access.redhat.com/webassets/avalon/d/red_hat_jboss_enterprise_application_platform/7.3/javadocs/org/hibernate/cache/spi/RegionFactory.html
RegionFactory (Red Hat JBoss Enterprise Application Platform 7.3.0.GA public API)
red hat jboss
https://commons.apache.org/proper/commons-math/javadocs/api-3.6.1/org/apache/commons/math3/geometry/partitioning/RegionFactory.html
RegionFactory (Apache Commons Math 3.6.1 API)
apache commonsmathapi