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What happens if you chain two filters like this?

scan_filter_chain:
  - name: range1
    type: LaserScanAngularBoundsFilter
    params:
      lower_angle: -3.14
      upper_angle: -1.57
  - name: range2
    type: LaserScanAngularBoundsFilter
    params:
      lower_angle: 1.57
      upper_angle: 3.14

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