{
  key.offset: 0,
  key.length: 166,
  key.diagnostic_stage: source.diagnostic.stage.swift.parse,
  key.substructure: [
    {
      key.kind: source.lang.swift.decl.extension,
      key.name: "Worker",
      key.offset: 0,
      key.length: 82,
      key.nameoffset: 10,
      key.namelength: 6,
      key.bodyoffset: 18,
      key.bodylength: 63,
      key.substructure: [
        {
          key.kind: source.lang.swift.decl.protocol,
          key.accessibility: source.lang.swift.accessibility.public,
          key.name: "BasicWorker",
          key.offset: 28,
          key.length: 52,
          key.nameoffset: 37,
          key.namelength: 11,
          key.bodyoffset: 58,
          key.bodylength: 21,
          key.inheritedtypes: [
            {
              key.name: "Worker"
            }
          ],
          key.attributes: [
            {
              key.offset: 21,
              key.length: 6,
              key.attribute: source.decl.attribute.public
            }
          ],
          key.elements: [
            {
              key.kind: source.lang.swift.structure.elem.typeref,
              key.offset: 50,
              key.length: 6
            }
          ],
          key.substructure: [
            {
              key.kind: source.lang.swift.decl.var.instance,
              key.accessibility: source.lang.swift.accessibility.public,
              key.setter_accessibility: source.lang.swift.accessibility.public,
              key.name: "eventLoop",
              key.offset: 63,
              key.length: 13,
              key.nameoffset: 67,
              key.namelength: 9
            }
          ]
        }
      ]
    },
    {
      key.kind: source.lang.swift.decl.class,
      key.accessibility: source.lang.swift.accessibility.internal,
      key.name: "3",
      key.offset: 84,
      key.length: 10,
      key.nameoffset: 90,
      key.namelength: 1,
      key.bodyoffset: 93,
      key.bodylength: 0
    },
    {
      key.kind: source.lang.swift.decl.extension,
      key.name: "OuterCls",
      key.offset: 96,
      key.length: 43,
      key.nameoffset: 106,
      key.namelength: 8,
      key.bodyoffset: 116,
      key.bodylength: 22,
      key.substructure: [
        {
          key.kind: source.lang.swift.decl.class,
          key.name: "InnerCls1",
          key.offset: 119,
          key.length: 18,
          key.nameoffset: 125,
          key.namelength: 9,
          key.bodyoffset: 136,
          key.bodylength: 0
        }
      ]
    },
    {
      key.kind: source.lang.swift.expr.closure,
      key.offset: 141,
      key.length: 24,
      key.bodyoffset: 142,
      key.bodylength: 22,
      key.substructure: [
        {
          key.kind: source.lang.swift.stmt.brace,
          key.offset: 141,
          key.length: 24,
          key.bodyoffset: 142,
          key.bodylength: 22,
          key.substructure: [
            {
              key.kind: source.lang.swift.decl.class,
              key.accessibility: source.lang.swift.accessibility.private,
              key.name: "MyCoolClass",
              key.offset: 143,
              key.length: 22,
              key.nameoffset: 149,
              key.namelength: 11,
              key.bodyoffset: 162,
              key.bodylength: 2
            }
          ]
        }
      ]
    }
  ],
  key.diagnostics: [
    {
      key.line: 7,
      key.column: 7,
      key.filepath: invalid.swift,
      key.severity: source.diagnostic.severity.error,
      key.id: "number_cant_start_decl_name",
      key.description: "class name can only start with a letter or underscore, not a number",
      key.diagnostic_stage: source.diagnostic.stage.swift.parse
    },
    {
      key.line: 13,
      key.column: 1,
      key.filepath: invalid.swift,
      key.severity: source.diagnostic.severity.error,
      key.id: "statement_begins_with_closure",
      key.description: "top-level statement cannot begin with a closure expression",
      key.diagnostic_stage: source.diagnostic.stage.swift.parse
    },
    {
      key.line: 17,
      key.column: 1,
      key.filepath: invalid.swift,
      key.severity: source.diagnostic.severity.error,
      key.id: "expected_closure_rbrace",
      key.description: "expected '}' at end of closure",
      key.diagnostic_stage: source.diagnostic.stage.swift.parse,
      key.diagnostics: [
        {
          key.line: 13,
          key.column: 1,
          key.filepath: invalid.swift,
          key.severity: source.diagnostic.severity.note,
          key.id: "opening_brace",
          key.description: "to match this opening '{'"
        }
      ]
    }
  ]
}