Better documentation for isValidSource function
Better documentation for isValidSource function

bluelml/core,owncloud/core,cernbox/core,IljaN/core,lrytz/core,owncloud/core,jbicha/server,whitekiba/server,pixelipo/server,endsguy/server,pmattern/server,pixelipo/server,Ardinis/server,IljaN/core,pollopolea/core,endsguy/server,bluelml/core,pollopolea/core,bluelml/core,cernbox/core,michaelletzgus/nextcloud-server,endsguy/server,phil-davis/core,xx621998xx/server,xx621998xx/server,sharidas/core,nextcloud/server,owncloud/core,Ardinis/server,bluelml/core,pmattern/server,Ardinis/server,owncloud/core,bluelml/core,lrytz/core,whitekiba/server,pollopolea/core,whitekiba/server,IljaN/core,jbicha/server,andreas-p/nextcloud-server,andreas-p/nextcloud-server,pollopolea/core,pmattern/server,owncloud/core,Ardinis/server,whitekiba/server,nextcloud/server,pmattern/server,xx621998xx/server,michaelletzgus/nextcloud-server,whitekiba/server,sharidas/core,andreas-p/nextcloud-server,michaelletzgus/nextcloud-server,cernbox/core,endsguy/server,sharidas/core,xx621998xx/server,xx621998xx/server,pixelipo/server,nextcloud/server,jbicha/server,pmattern/server,jbicha/server,cernbox/core,jbicha/server,andreas-p/nextcloud-server,lrytz/core,cernbox/core,pollopolea/core,michaelletzgus/nextcloud-server,IljaN/core,pixelipo/server,nextcloud/server,pixelipo/server,Ardinis/server,lrytz/core,sharidas/core,IljaN/core,andreas-p/nextcloud-server,endsguy/server,lrytz/core,sharidas/core