package Ġorg . step ic . d roid . storage . migration Ċ Ċ import Ġandroidx . room . migration . Migration Ċ import Ġandroidx . sqlite . db . Support SQLite Database Ċ import Ġorg . step ik . android . cache . lesson . structure . Db Structure Lesson Ċ Ċ object ĠMigration From 5 4 To 5 5 Ġ: ĠMigration ( 5 4 , Ġ 5 5 ) Ġ{ ĊĠĠĠ Ġoverride Ġfun Ġmigrate ( db : ĠSupport SQLite Database ) Ġ{ ĊĠĠĠĠĠĠĠ Ġdb . exec SQL (" ALTER ĠTABLE Ġ${ Db Structure Lesson . TABLE _ NAME } ĠADD ĠCOLUMN Ġ${ Db Structure Lesson . Columns . CO UR SES } ĠTEXT ") ĊĠĠĠ Ġ} Ċ }