UK: refactor complex retrieve class method
UK: refactor complex retrieve class method

spatialdev/onadata,qlands/onadata,mainakibui/kobocat,GeoODK/onadata,sounay/flaminggo-test,jomolinare/kobocat,spatialdev/onadata,sounay/flaminggo-test,jomolinare/kobocat,GeoODK/onadata,sounay/flaminggo-test,smn/onadata,kobotoolbox/kobocat,mainakibui/kobocat,piqoni/onadata,GeoODK/onadata,qlands/onadata,sounay/flaminggo-test,hnjamba/onaclone,kobotoolbox/kobocat,spatialdev/onadata,hnjamba/onaclone,jomolinare/kobocat,piqoni/onadata,awemulya/fieldsight-kobocat,piqoni/onadata,smn/onadata,mainakibui/kobocat,awemulya/fieldsight-kobocat,GeoODK/onadata,hnjamba/onaclone,kobotoolbox/kobocat,kobotoolbox/kobocat,hnjamba/onaclone,awemulya/fieldsight-kobocat,smn/onadata,qlands/onadata,qlands/onadata,jomolinare/kobocat,mainakibui/kobocat,piqoni/onadata,spatialdev/onadata,awemulya/fieldsight-kobocat,smn/onadata