Luke: Added utility for querying based on key-string.
Luke: Added utility for querying based on key-string.

mkl-/scioncc,scionrep/scioncc,scionrep/scioncc,crchemist/scioncc,ooici/pyon,mkl-/scioncc,scionrep/scioncc,crchemist/scioncc,ooici/pyon,crchemist/scioncc,mkl-/scioncc