export declare abstract class QueryBuilder {
  __query: string;
  constructor();
  protected __attr(attr: string): this;
  _(str: string): this;
  protected __child<T extends QueryBuilder>(
    childName: string,
    childType: new () => T,
    builder?: string | ((q: T) => T) | T
  ): this;
  protected __inlineFragment<T extends QueryBuilder>(
    childName: string,
    childType: new () => T,
    builder?: string | ((q: T) => T) | T
  ): this;
  protected __buildChild<T extends QueryBuilder>(
    childType: new () => T,
    builder?: string | ((q: T) => T) | T
  ): void;
  toString(): string;
}