/**
 * Returns the value of another parameter
 *
 * @remarks
 * It takes 1 argument, the path to the parameter.
 *
 * ch(<param_path\>)
 *
 * - **<param_path\>** is a string, which can be the absolute or relative path
 *
 * ## Usage
 *
 * - `ch('./tx')` - returns the value of the parameter tx of the same node
 * - `ch('/geo1/tx')` - returns the value of the tx of the node /geo1
 *
 */
import { BaseMethod } from './_Base';
import { MethodDependency } from '../MethodDependency';
export declare class ChExpression extends BaseMethod {
    protected _require_dependency: boolean;
    static required_arguments(): string[][];
    find_dependency(index_or_path: number | string): MethodDependency | null;
    process_arguments(args: any[]): Promise<any>;
}