版本迁移室数据库。如何？

Question

我遇到了一个问题，因此我不知道如何迁移数据库的以下更改：

@Insert(onConflict = OnConflictStrategy.REPLACE)   //onConflict was added
void insertContact(Contact contact);

@Entity(indices = {@Index(value = {"phonenumber"},
    unique = true)})                               // again Content in brackets was added

这就是我现在的全部：

static final Migration MIGRATION_2_3 = new Migration(2, 3) {
    @Override
    public void migrate(SupportSQLiteDatabase database) {
        // Migration
    }
};