code: public final <V> Mono<V> thenReturn(V value) {
  	    return then(Mono.just(value));
  	}
docs: Let this {@link Mono} complete then emit the provided value.
  <p>
  <img class="marble" src="doc-files/marbles/thenReturn.svg" alt="">
  
  @reactor.discard This operator discards the element from the source.
  
  @param value a value to emit after termination
  @param <V> the element type of the supplied value
  
  @return a new {@link Mono} that emits the supplied value