{
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        "copper_sliver": "warning",
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        "footprint": "error",
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    },
    "ipc2581": {
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      "distpn": "",
      "internal_id": "",
      "mfg": "",
      "mpn": ""
    },
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      "conflicting_netclasses": "error",
      "different_unit_footprint": "error",
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        "netclass": "SDRAM_H",
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        "netclass": "LVDS",
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      },
      {
        "netclass": "POWER",
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      },
      {
        "netclass": "POWER",
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        "netclass": "USB",
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    ]
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        },
        {
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      ],
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