[
    ApolloDiagnostic {
        cache: {
            0: "built_in_types.graphql",
            15: "0015_mutation_operation_without_mutation_schema_definition.graphql",
        },
        location: DiagnosticLocation {
            file_id: FileId {
                id: 15,
            },
            offset: 0,
            length: 74,
        },
        labels: [
            Label {
                location: DiagnosticLocation {
                    file_id: FileId {
                        id: 15,
                    },
                    offset: 0,
                    length: 74,
                },
                text: "Mutation operation is not defined in the schema and is therefore not supported",
            },
        ],
        help: Some(
            "consider defining a `mutation` root operation type in your schema",
        ),
        data: UnsupportedOperation {
            ty: "mutation",
        },
    },
]
