Function(
 Function {
  head: Destructured(
   FunctionHeadDestructured {
    ellipsis: true,
    identifier: None,
    arguments: [
     FunctionHeadDestructuredArgument {
      identifier: "config",
      default: None,
     },
     FunctionHeadDestructuredArgument {
      identifier: "lib",
      default: None,
     },
    ],
   },
  ),
  body: LetIn(
   LetIn {
    bindings: [
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      BindingInherit {
       from: Some(
        Identifier(
         Identifier {
          id: "lib",
          span: Span {
           start: Position {
            line: 2,
            column: 14,
           },
           end: Position {
            line: 2,
            column: 17,
           },
          },
         },
        ),
       ),
       attributes: [
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         PartRaw {
          content: "types",
          span: Span {
           start: Position {
            line: 2,
            column: 19,
           },
           end: Position {
            line: 2,
            column: 24,
           },
          },
         },
        ),
        Raw(
         PartRaw {
          content: "mkOption",
          span: Span {
           start: Position {
            line: 2,
            column: 25,
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           end: Position {
            line: 2,
            column: 33,
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          },
         },
        ),
        Raw(
         PartRaw {
          content: "attrNames",
          span: Span {
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            line: 2,
            column: 34,
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           end: Position {
            line: 2,
            column: 43,
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          },
         },
        ),
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       span: Span {
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         line: 2,
         column: 4,
        },
        end: Position {
         line: 2,
         column: 44,
        },
       },
      },
     ),
    ],
    target: Map(
     Map {
      recursive: false,
      bindings: [
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        BindingKeyValue {
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           PartRaw {
            content: "options",
            span: Span {
             start: Position {
              line: 5,
              column: 3,
             },
             end: Position {
              line: 5,
              column: 10,
             },
            },
           },
          ),
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         to: Map(
          Map {
           recursive: false,
           bindings: [
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             BindingKeyValue {
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                PartRaw {
                 content: "attrs",
                 span: Span {
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                   column: 5,
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                  end: Position {
                   line: 6,
                   column: 10,
                  },
                 },
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               ),
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              to: FunctionApplication(
               FunctionApplication {
                function: Identifier(
                 Identifier {
                  id: "mkOption",
                  span: Span {
                   start: Position {
                    line: 6,
                    column: 13,
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                   end: Position {
                    line: 6,
                    column: 21,
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                 },
                ),
                arguments: [
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                   bindings: [
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                         span: Span {
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                           column: 24,
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                          end: Position {
                           line: 6,
                           column: 28,
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                      to: FunctionApplication(
                       FunctionApplication {
                        function: PropertyAccess(
                         PropertyAccess {
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                              column: 31,
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                             end: Position {
                              line: 6,
                              column: 36,
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                          attribute_path: [
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                               column: 37,
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                              end: Position {
                               line: 6,
                               column: 44,
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                             },
                            },
                           ),
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                          default: None,
                         },
                        ),
                        arguments: [
                         PropertyAccess(
                          PropertyAccess {
                           expression: Identifier(
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                             span: Span {
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                               column: 45,
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                              end: Position {
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                               column: 48,
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                           attribute_path: [
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                                column: 49,
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                                column: 54,
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                            Raw(
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                              span: Span {
                               start: Position {
                                line: 6,
                                column: 55,
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                               end: Position {
                                line: 6,
                                column: 58,
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                             },
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                           default: None,
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                      ),
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                   ],
                   span: Span {
                    start: Position {
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                     column: 22,
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                    end: Position {
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                     column: 61,
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                   column: 11,
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              to: FunctionApplication(
               FunctionApplication {
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                  span: Span {
                   start: Position {
                    line: 7,
                    column: 14,
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                   end: Position {
                    line: 7,
                    column: 22,
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                ),
                arguments: [
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                   bindings: [],
                   span: Span {
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                     column: 23,
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                    end: Position {
                     line: 7,
                     column: 26,
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                   column: 5,
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                   column: 14,
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                },
               ),
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              to: FunctionApplication(
               FunctionApplication {
                function: Identifier(
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                  span: Span {
                   start: Position {
                    line: 8,
                    column: 17,
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                   end: Position {
                    line: 8,
                    column: 25,
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                 },
                ),
                arguments: [
                 Map(
                  Map {
                   recursive: false,
                   bindings: [],
                   span: Span {
                    start: Position {
                     line: 8,
                     column: 26,
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                    end: Position {
                     line: 8,
                     column: 29,
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            KeyValue(
             BindingKeyValue {
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                   line: 9,
                   column: 5,
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                  end: Position {
                   line: 9,
                   column: 17,
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               ),
              ],
              to: FunctionApplication(
               FunctionApplication {
                function: Identifier(
                 Identifier {
                  id: "mkOption",
                  span: Span {
                   start: Position {
                    line: 9,
                    column: 20,
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                   end: Position {
                    line: 9,
                    column: 28,
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                 },
                ),
                arguments: [
                 Map(
                  Map {
                   recursive: false,
                   bindings: [],
                   span: Span {
                    start: Position {
                     line: 9,
                     column: 29,
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                    end: Position {
                     line: 9,
                     column: 32,
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                   column: 5,
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                  end: Position {
                   line: 10,
                   column: 17,
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               ),
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              to: FunctionApplication(
               FunctionApplication {
                function: Identifier(
                 Identifier {
                  id: "mkOption",
                  span: Span {
                   start: Position {
                    line: 10,
                    column: 20,
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                   end: Position {
                    line: 10,
                    column: 28,
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                arguments: [
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                   bindings: [],
                   span: Span {
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                     column: 29,
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                    end: Position {
                     line: 10,
                     column: 32,
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             column: 13,
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              column: 3,
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              column: 9,
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           bindings: [
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                   column: 10,
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                   column: 11,
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                   column: 12,
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                  column: 15,
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                  column: 16,
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                   column: 5,
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                   column: 18,
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                  end: Position {
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                   column: 23,
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                   column: 24,
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                  end: Position {
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                   column: 25,
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              to: Integer(
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                 start: Position {
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                  column: 28,
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                  column: 29,
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