package Ġchar lie . lap lac ian . track . property . essential Ċ Ċ import Ġchar lie . lap lac ian . track . property . Property Applicable Type Sets . Companion . TRACK _ AND _ GROUP ING Ċ import Ġchar lie . lap lac ian . track . property . Property Applicable Type Sets . Companion . TRACK _ ONLY Ċ Ċ class ĠTrack Number Property ( value : ĠInt ): ĠI 1 8 n Property < Int >( value , Ġ" property . essential . track Number Property . name ", ĊĠĠĠĠĠĠĠ ĠTR ACK _ ONLY ) Ċ class ĠRelease Year Property ( value : ĠInt ): ĠI 1 8 n Property < Int >( value , Ġ" property . essential . release Year Property . name ", ĊĠĠĠĠĠĠĠ ĠTR ACK _ AND _ GROUP ING ) Ċ class ĠB PM Property ( value : ĠInt ): ĠI 1 8 n Property < Int >( value , Ġ" property . essential . bpm Property . name ", ĊĠĠĠĠĠĠĠ ĠTR ACK _ ONLY )