vertx / io.vertx.rxjava.core / Future / fail

# fail

`open fun fail(cause: Throwable): Unit`

Set the failure. Any handler will be called, if there is one, and the future will be marked as completed.

### Parameters

`cause` - the failure cause

`open fun fail(failureMessage: String): Unit`

Try to set the failure. When it happens, any handler will be called, if there is one, and the future will be marked as completed.

### Parameters

`failureMessage` - the failure message