{
        name: 'MySchema',
        primaryKey: 'id',
        properties: {
            id: { type: 'int' },
            fieldOne: { type: 'string' },
            fieldTwo:  { type: 'string', default: 'DEFAULT_VALUE' },
        },
}

realm.create("MySchema", {id: 1337, fieldOne: "SOME_VALUE", fieldTwo: "NOT_DEFAULT_VALUE" })

realm.create("MySchema", {id: 1337, fieldOne: "SOME_OTHER_VALUE" },  Realm.UpdateMode.All)

declare enum UpdateMode {
    /**
     * Objects are only created. If an existing object exists, an exception is thrown.
     */
    Never = "never",
    /**
     * If an existing object exists, only properties where the value has actually
     * changed will be updated. This improves notifications and server side
     * performance but also have implications for how changes across devices are
     * merged. For most use cases, the behavior will match the intuitive behavior
     * of how changes should be merged, but if updating an entire object is
     * considered an atomic operation, this mode should not be used.
     */
    Modified = "modified",
    /**
+     * If an existing object is found, all properties provided will be updated,
+     * any other properties will remain unchanged.     <==========
     */
    All = "all"
}