How to use the @jscad/modeling.hullChain function in @jscad/modeling

translate([x, y, 0], scale(6 - i / 2, circle())) // { center: true }
    )
  }

  const n = 6
  for (let i = 0; i < n; i++) { // -- hexagon chain hulled
    const x = sin(i / n * 360) * 10
    const y = cos(i / n * 360) * 10
    hexagon.push(
      translate([x, y, 0], circle())// { center: true }
    )
  }

  return [
    translate([-20, 0, 0],
      extrudeLinear({ height: 5 }, hullChain(shell))
    ),
    hullChain(shell),
    translate([20, 0, 0],
      union(shell)
    ),

    translate([-25, 40, 0],
      extrudeLinear({ height: 5 }, hullChain({ closed: true }, hexagon))
    ),
    translate([0, 40, 0],
      hullChain({ closed: true }, hexagon)
    ),
    translate([25, 40, 0],
      union(hexagon)
    )
  ]

hexagon.push(
      translate([x, y, 0], circle())// { center: true }
    )
  }

  return [
    translate([-20, 0, 0],
      extrudeLinear({ height: 5 }, hullChain(shell))
    ),
    hullChain(shell),
    translate([20, 0, 0],
      union(shell)
    ),

    translate([-25, 40, 0],
      extrudeLinear({ height: 5 }, hullChain({ closed: true }, hexagon))
    ),
    translate([0, 40, 0],
      hullChain({ closed: true }, hexagon)
    ),
    translate([25, 40, 0],
      union(hexagon)
    )
  ]
}

}

  const n = 6
  for (let i = 0; i < n; i++) { // -- hexagon chain hulled
    const x = sin(i / n * 360) * 10
    const y = cos(i / n * 360) * 10
    hexagon.push(
      translate([x, y, 0], circle())// { center: true }
    )
  }

  return [
    translate([-20, 0, 0],
      extrudeLinear({ height: 5 }, hullChain(shell))
    ),
    hullChain(shell),
    translate([20, 0, 0],
      union(shell)
    ),

    translate([-25, 40, 0],
      extrudeLinear({ height: 5 }, hullChain({ closed: true }, hexagon))
    ),
    translate([0, 40, 0],
      hullChain({ closed: true }, hexagon)
    ),
    translate([25, 40, 0],
      union(hexagon)
    )
  ]
}

}

  return [
    translate([-20, 0, 0],
      extrudeLinear({ height: 5 }, hullChain(shell))
    ),
    hullChain(shell),
    translate([20, 0, 0],
      union(shell)
    ),

    translate([-25, 40, 0],
      extrudeLinear({ height: 5 }, hullChain({ closed: true }, hexagon))
    ),
    translate([0, 40, 0],
      hullChain({ closed: true }, hexagon)
    ),
    translate([25, 40, 0],
      union(hexagon)
    )
  ]
}