code: def simulate(pointa, pointb):
      streamlines = mesh.streamlines(
          n_points=10,
          max_steps=100,
          pointa=pointa,
          pointb=pointb,
          integration_direction="forward",
      )
      p.add_mesh(
          streamlines,
          name="streamlines",
          line_width=5,
          render_lines_as_tubes=True,
          clim=clim,
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: simulate(pointa, pointb) without return types