function didSetBreakpoint(error, breakpointId, locations)
        {
            if (callback)
                callback(error ? null : breakpointId, locations);
        }
@this {WebInspector.DebuggerModel}
@param {?Protocol.Error} error
@param {DebuggerAgent.BreakpointId} breakpointId
@param {Array.<DebuggerAgent.Location>=} locations