question: private static String embedServerID ( String id ) { String serverId = null ; try { serverId = SystemConfigurationUtil . getServerID ( serverProtocol , serverHost , intServerPort , serverUri ) ; if ( serverId != null && serverId . length ( ) == 2 ) { id = id . substring ( 0 , id . length ( ) - 2 ) + serverId ; } else if ( debug . messageEnabled ( ) ) { debug . message ( "SAML2Utils.appendServerID: " + "invalid server id = " + serverId ) ; } } catch ( Exception ex ) { if ( debug . messageEnabled ( ) ) { debug . message ( "SAML2Utils.appendServerID:" , ex ) ; } } return id ; }
target:  Replaces last 2 chars of specified id with server id.