[
    ApolloDiagnostic {
        cache: {
            0: "built_in_types.graphql",
            44: "0044_union_member_not_of_object_type.graphql",
        },
        location: DiagnosticLocation {
            file_id: FileId {
                id: 44,
            },
            offset: 219,
            length: 3,
        },
        labels: [
            Label {
                location: DiagnosticLocation {
                    file_id: FileId {
                        id: 44,
                    },
                    offset: 219,
                    length: 3,
                },
                text: "This is of `InterfaceTypeDefinition` type",
            },
        ],
        help: Some(
            "Union members must be of base Object Type.",
        ),
        data: ObjectType {
            name: "Pet",
            ty: "InterfaceTypeDefinition",
        },
    },
]
