[
    ApolloDiagnostic {
        cache: {
            0: "built_in_types.graphql",
            4: "0004_subscription_with_multiple_root_fields.graphql",
        },
        location: DiagnosticLocation {
            file_id: FileId {
                id: 4,
            },
            offset: 0,
            length: 87,
        },
        labels: [
            Label {
                location: DiagnosticLocation {
                    file_id: FileId {
                        id: 4,
                    },
                    offset: 0,
                    length: 87,
                },
                text: "subscription with 2 root fields",
            },
        ],
        help: Some(
            "There are 2 root fields: newMessage, disallowedSecondRootField. This is not allowed.",
        ),
        data: SingleRootField {
            fields: 2,
            subscription: DiagnosticLocation {
                file_id: FileId {
                    id: 4,
                },
                offset: 0,
                length: 87,
            },
        },
    },
]
