NoReturnVoidRule

lint.json

{
  "key.elements" : [
    {
      "key.kind" : "source.lang.swift.structure.elem.condition_expr",
      "key.length" : 13,
      "key.offset" : 102
    }
  ],
  "key.kind" : "source.lang.swift.stmt.guard",
  "key.length" : 83,
  "key.namelength" : 0,
  "key.nameoffset" : 0,
  "key.offset" : 96,
  "key.substructure" : [
    {
      "key.bodylength" : 0,
      "key.bodyoffset" : 114,
      "key.kind" : "source.lang.swift.expr.call",
      "key.length" : 13,
      "key.name" : "file.exists",
      "key.namelength" : 11,
      "key.nameoffset" : 102,
      "key.offset" : 102
    },
    {
      "key.bodylength" : 56,
      "key.bodyoffset" : 122,
      "key.kind" : "source.lang.swift.stmt.brace",
      "key.length" : 58,
      "key.namelength" : 0,
      "key.nameoffset" : 0,
      "key.offset" : 121,
      "key.substructure" : [
        {
          "key.bodylength" : 20,
          "key.bodyoffset" : 137,
          "key.kind" : "source.lang.swift.expr.call",
          "key.length" : 27,
          "key.name" : "print",
          "key.namelength" : 5,
          "key.nameoffset" : 131,
          "key.offset" : 131
        }
      ]
    }
  ]
}