---
Function {
 argument: None,
 arguments: FunctionArguments {
  arguments: [
   FunctionArgument {
    identifier: "config",
    default: None,
   },
   FunctionArgument {
    identifier: "lib",
    default: None,
   },
  ],
  ellipsis: true,
 },
 definition: Map {
  bindings: [
   KeyValue(
    AttributePath {
     attributes: [
      Raw {
       content: "options",
       position: (2, 3),
      },
      Raw {
       content: "isLazy",
       position: (2, 11),
      },
     ],
    },
    FunctionApplication {
     function: PropertyAccess {
      expression: Variable {
       identifier: "lib",
       position: (2, 20),
      },
      attribute_path: AttributePath {
       attributes: [
        Raw {
         content: "mkOption",
         position: (2, 24),
        },
       ],
      },
      default: None,
     },
     arguments: [
      Map {
       bindings: [
        KeyValue(
         AttributePath {
          attributes: [
           Raw {
            content: "default",
            position: (3, 5),
           },
          ],
         },
         UnaryOperation {
          operator: Not,
          operand: HasProperty {
           expression: PropertyAccess {
            expression: Variable {
             identifier: "config",
             position: (3, 17),
            },
            attribute_path: AttributePath {
             attributes: [
              Raw {
               content: "value",
               position: (3, 24),
              },
             ],
            },
            default: None,
           },
           attribute_path: AttributePath {
            attributes: [
             Raw {
              content: "foo",
              position: (3, 32),
             },
            ],
           },
           position: (3, 30),
          },
          position: (3, 15),
         },
        ),
       ],
       recursive: false,
       position: (2, 33),
      },
     ],
    },
   ),
   KeyValue(
    AttributePath {
     attributes: [
      Raw {
       content: "config",
       position: (6, 3),
      },
      Raw {
       content: "value",
       position: (6, 10),
      },
      Raw {
       content: "bar",
       position: (6, 16),
      },
     ],
    },
    FunctionApplication {
     function: Variable {
      identifier: "throw",
      position: (6, 22),
     },
     arguments: [
      String {
       parts: [
        Raw {
         content: "is not lazy",
         position: (6, 29),
        },
       ],
      },
     ],
    },
   ),
  ],
  recursive: false,
  position: (1, 23),
 },
 position: (1, 1),
}