trustfall query plan folds

plan.rs

QueryPlan {
    plan: [
        GetStartingTokens {
            edge: "Feed",
            vid: Vid(
                1,
            ),
        },
        Record(
            Vid(
                1,
            ),
        ),
        Activate(
            Vid(
                1,
            ),
        ),
        Expand {
            optional: false,
            neighbors: ProjectNeighbors {
                type_name: "Feed",
                edge_name: "title",
                parameters: None,
                eid: Eid(
                    1,
                ),
                vid: Vid(
                    1,
                ),
            },
        },
        Record(
            Vid(
                2,
            ),
        ),
        Activate(
            Vid(
                1,
            ),
        ),
        Fold {
            neighbors: ProjectNeighbors {
                type_name: "Feed",
                edge_name: "links",
                parameters: None,
                eid: Eid(
                    2,
                ),
                vid: Vid(
                    1,
                ),
            },
            first: NewWithImported,
            plan: [
                Record(
                    Vid(
                        3,
                    ),
                ),
                Collect(
                    Eid(
                        2,
                    ),
                ),
                RemoveTags(
                    [],
                ),
            ],
        },
        FoldOutputs {
            eid: Eid(
                2,
            ),
            vid: Vid(
                1,
            ),
            output_names: [
                "links_href",
                "links_title",
            ],
            outputs: {
                "links_href": ContextField {
                    vertex_id: Vid(
                        3,
                    ),
                    field_name: "href",
                    field_type: Type {
                        base: Named(
                            Name(
                                "String",
                            ),
                        ),
                        nullable: false,
                    },
                },
                "links_title": ContextField {
                    vertex_id: Vid(
                        3,
                    ),
                    field_name: "title",
                    field_type: Type {
                        base: Named(
                            Name(
                                "String",
                            ),
                        ),
                        nullable: true,
                    },
                },
            },
            fold_outputs: {},
            folds: {},
            plan: [
                MoveTo(
                    Vid(
                        3,
                    ),
                ),
                ProjectProperty {
                    type_name: "FeedLink",
                    vid: Vid(
                        3,
                    ),
                    field_name: "href",
                },
                MoveTo(
                    Vid(
                        3,
                    ),
                ),
                ProjectProperty {
                    type_name: "FeedLink",
                    vid: Vid(
                        3,
                    ),
                    field_name: "title",
                },
            ],
        },
        MoveTo(
            Vid(
                1,
            ),
        ),
        ProjectProperty {
            type_name: "Feed",
            vid: Vid(
                1,
            ),
            field_name: "feedType",
        },
        MoveTo(
            Vid(
                1,
            ),
        ),
        ProjectProperty {
            type_name: "Feed",
            vid: Vid(
                1,
            ),
            field_name: "id",
        },
        MoveTo(
            Vid(
                2,
            ),
        ),
        ProjectProperty {
            type_name: "FeedText",
            vid: Vid(
                2,
            ),
            field_name: "content",
        },
        MoveTo(
            Vid(
                2,
            ),
        ),
        ProjectProperty {
            type_name: "FeedText",
            vid: Vid(
                2,
            ),
            field_name: "contentType",
        },
        MoveTo(
            Vid(
                2,
            ),
        ),
        ProjectProperty {
            type_name: "FeedText",
            vid: Vid(
                2,
            ),
            field_name: "src",
        },
        CollectOutputs(
            [
                "feedType",
                "id",
                "title_content",
                "title_contentType",
                "title_src",
            ],
        ),
    ],
}

query.gql

{
    Feed {
        id @output
        feedType @output

        title_: title {
            src @output
            content @output
            contentType @output
        }

        links_: links @fold {
            title @output
            href @output
        }
    }
}