Merge "Modify docs to reflect operational changes in overrideConfig" into qt-dev

    /**

     * Overrides the carrier config of the provided subscription ID with the provided values.

     *

     * Any further queries to carrier config from any process will return

     * the overriden values after this method returns. The overrides are effective for the lifetime

     * of the phone process.

     * Any further queries to carrier config from any process will return the overridden values

     * after this method returns. The overrides are effective for the lifetime of the phone process

     * until the user passes in {@code null} for {@code overrideValues}. This removes all previous

     * overrides and sets the carrier config back to production values.

     *

     * May throw an {@link IllegalArgumentException} if {@code overrideValues} contains invalid

     * values for the specified config keys.

     *

     * NOTE: This API is meant for testing purposes only and may only be accessed from the shell UID

     * during instrumentation testing.

     *

     * @param subscriptionId The subscription ID for which the override should be done.

     * @param overrideValues Key-value pairs of the values that are to be overriden. If null,

     *                       all previous overrides will be disabled and the config reset back to

     *                       its initial state.

     * @param overrideValues Key-value pairs of the values that are to be overridden. If set to

     *                       {@code null}, this will remove all previous overrides and set the

     *                       carrier configuration back to production values.

     * @hide

     */

    @RequiresPermission(Manifest.permission.MODIFY_PHONE_STATE)