Wavy lines - contemporary notation

[Rachel Green]

How can I create a wavy line as in this picture?
Best,
Rachel

\relative c
  {
  \time 6/4
  \clef C
  \override NoteHead.style = #'harmonic
  c’1 r4 r4
  }

Scan Mar 26, 2022.pdf
Description: Scan Mar 26, 2022.pdf