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package org.mozilla.gecko.util;
import org.mozilla.gecko.annotation.RobocopTarget;
/**
* Callback interface for Gecko requests.
*
* For each instance of EventCallback, exactly one of sendResponse, sendError, or sendCancel
* must be called to prevent observer leaks. If more than one send* method is called, or if a
* single send method is called multiple times, an {@link IllegalStateException} will be thrown.
*/
@RobocopTarget
public interface EventCallback {
/**
* Sends a success response with the given data.
*
* @param response The response data to send to Gecko. Can be any of the types accepted by
* JSONObject#put(String, Object).
*/
public void sendSuccess(Object response);
/**
* Sends an error response with the given data.
*
* @param response The response data to send to Gecko. Can be any of the types accepted by
* JSONObject#put(String, Object).
*/
public void sendError(Object response);
}
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