/**
 * Represents a request to send message a {@link ChatRoom | chat room}.
 *
 * @remarks
 *   Sending this request to a chat room requires SEND_MESSAGE capability encoded in chat token. Otherwise, server will
 *   respond with error code 403 ({@link chatErrorCodes}).
 */
export declare class SendMessageRequest {
    /** @internal */
    action: 'SEND_MESSAGE';
    /**
     * Client-generated unique identifier (UUID) that will be used by the SDK to match response or error for given
     * request.
     */
    requestId: string;
    /** Message to be sent. */
    content: string;
    /** Key-value object for any additional data. */
    attributes?: Record<string, string>;
    /**
     * Constructs a {@link SendMessageRequest } instance.
     *
     * @param content - Message to be sent
     * @param attributes - Key-value object for any additional data
     */
    constructor(content: string, attributes?: Record<string, string>);
}
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