use xml property instead of calling etree.tostring
use xml property instead of calling etree.tostring

kalxas/pycsw,rouault/pycsw,bukun/pycsw,bukun/pycsw,ckan-fcd/pycsw-fcd,ricardogsilva/pycsw,tomkralidis/pycsw,PublicaMundi/pycsw,ocefpaf/pycsw,geopython/pycsw,ingenieroariel/pycsw,ingenieroariel/pycsw,kevinpdavies/pycsw,kalxas/pycsw,mwengren/pycsw,ckan-fcd/pycsw-fcd,ricardogsilva/pycsw,geopython/pycsw,ricardogsilva/pycsw,tomkralidis/pycsw,rouault/pycsw,PublicaMundi/pycsw,benhowell/pycsw,kevinpdavies/pycsw,benhowell/pycsw,geopython/pycsw,tomkralidis/pycsw,kalxas/pycsw,bukun/pycsw,ocefpaf/pycsw,mwengren/pycsw