refactoring of I/O provider reference help

Change-Id: I2142356a3a22a50bc092f0d02926322f8c795743
Reviewed-on: http://gerrit.esdi-community.eu/3179
Tested-by: Jenkins <sitemple@igd.fraunhofer.de>
Reviewed-by: Simon Templer <simon.templer@igd.fraunhofer.de>