question: void close ( String name ) { if ( jmx ) { try { Utils . callStaticMethod ( "org.h2.jmx.DatabaseInfo.unregisterMBean" , name ) ; } catch ( Exception e ) { throw DbException . get ( ErrorCode . FEATURE_NOT_SUPPORTED_1 , e , "JMX" ) ; } } DATABASES . remove ( name ) ; }
target:  Called after a database has been closed, to remove the object from the list of open databases.