/**
 * Source is the wire field `type` (Python QueryRequest.source has alias="type").
 * SourceLegacy accepts the pre-rename `source` key (Python populate_by_name=True
 * keeps the field name valid on input); resolveSourceAlias folds it into Source.
 */
export declare const SearchSourceType: {
    readonly Knowledge: "knowledge";
    readonly Memory: "memory";
    readonly All: "all";
    readonly Unified: "unified";
};
export type SearchSourceType = (typeof SearchSourceType)[keyof typeof SearchSourceType];