export declare const HTTP_INTERFACE_METADATA: unique symbol;
export declare const HTTP_EXCHANGE_METADATA: unique symbol;
export declare const PATH_VARIABLE_METADATA: unique symbol;
export declare const REQUEST_PARAM_METADATA: unique symbol;
export declare const REQUEST_BODY_METADATA: unique symbol;
export declare const REQUEST_FORM_METADATA: unique symbol;
export declare const REQUEST_HEADER_METADATA: unique symbol;
export declare const RESPONSE_BODY_METADATA: unique symbol;
export declare const CIRCUIT_BREAKER_METADATA: unique symbol;
export declare const OBSERVABLE_METADATA: unique symbol;