slur or tie to no note in Lillypond

Question

I am trying to have a slured note to 'nothing' in a musical example in my paper, like this:

Any tie (~) or slur () I put in Lilypond (actually Frescobaldi), nothing happens.
This is the code I am using:

\version "2.18.2"
  global = {
  \key bes \major
  \numericTimeSignature
  \time 6/8
}

violin = \relative c'' {
  \global
  % Music follows here.
  c ees f~
}

\score {
  \new Staff \violin
  \layout { }
}

Any help is appreciated!

Answer 1

You can tie the note to a hidden note.

{ \time 6/8 \relative c'' {
  c4 e f~ | \once \hideNotes f c b
} }

Answer 2

Use \laissezVibrer instead of ~. Cf the notation manual.