PointContainer.schema = {
  name: 'PointContainer',
  schemaVersion,
  properties: {
    index: { type: 'int', default: -1 },
  },
};

class MyObject {
}
MyObject.schema = {
  name: 'MyObject',
  schemaVersion,
  properties: {
    uuidParent: { type: 'string' },

    // These are the two new lists added to schema
    // Goal: To populate lists during Realm migration
    newStringList: 'string[]',
    newPointContainerList: 'PointContainer[]',
  },
};

export default new Realm({
  path: Platform.OS === 'android' ? 'database.realm' : 'db/database.realm',
  schema: [
    MyObject,
    PointContainer,
  ],
  schemaVersion,
  migration(oldRealm, newRealm) {

    if (oldRealm.schemaVersion < SchemaVersionAddNewList) {
      try {
        const myObjectListOld = oldRealm.objects('MyObject');
        const myObjectListNew = newRealm.objects('MyObject');
        for (let i = 0; i < myObjectListOld.length; i += 1) {
          const myObjectOld = myObjectListOld[i];
          const myObjectNew = myObjectListNew[i];

          // This result is an empty myObjectNew.newStringList
          myObjectNew.newStringList.push('one');
          myObjectNew.newStringList.push('two');
          myObjectNew.newStringList.push('three');

          // New PointContainer objects will be created
          // This result is an empty myObjectNew.newPointContainerList
          myObjectNew.newPointContainerList.push({ index: 1});
          myObjectNew.newPointContainerList.push({ index: 2});
          myObjectNew.newPointContainerList.push({ index: 3});
        } //
      } catch (error) {
       // No errors are displayed or caught?
        console.log('dbg: *** Error migration:\n', error);
      }
    }
  },
});