Я могу передать Child в функцию-член, ожидающую Parent, однако при использовании векторов я получаю сообщение об ошибке компиляции:Нет соответствующего объявления. Посмотрите вызов CorrelationEngineManager.cpp для getUniqueLabels () внизу

ServerEvent.h

#ifndef SERVEREVENT_H
#define SERVEREVENT_H

#define SERVEREVENT_COLS 3

#include "Event.h"
#include 


class ServerEvent: public Event {
private:

public: 
    ServerEvent(std::vector tokens);
    void print();
};

#endif

Event.h

#ifndef EVENT_H
#define EVENT_H

#include 

#define EVENT_STOP 0
#define EVENT_START 1

class Event {
private:

protected:
    double time;
    std::string label;
    int type; // EVENT_START OR EVENT_STOP

public:

};

#endif

CorrelationEngineManager.h

class CorrelationEngineManager {
private:
    std::vector s_events;
    std::vector u_events;
    std::vector s_timeRecords;
    std::vector u_timeRecords;
    // typeOfEvent gets type of event, 0 for error, look at #defines for codes
    int typeOfEvent(std::vector);
    int createTimeRecords();
    std::vector getUniqueLabels(std::vector events);


public:
    CorrelationEngineManager();
    //~CorrelationEngineManager();
    int addEvent(std::vector tokens); //add event given tokens
    void print_events();
};

CorrelationEngineManager.cpp

int CorrelationEngineManager::createTimeRecords() {
    std::vector u_sLabels; // unique server labels
    std::vector u_uLabels; // unique UPS labels
    u_sLabels = getUniqueLabels(s_events);
//  u_uLabels = getUniqueLabels(u_events);
    return 1;
}
// returns a vector of unique labels, input a vector of events
std::vector CorrelationEngineManager::getUniqueLabels(std::vector events) {

    std::vector temp;
    return temp;
}

ошибка компиляции

 CorrelationEngineManager.cpp: In member function ‘int CorrelationEngineManager::createTimeRecords()’:
 CorrelationEngineManager.cpp:60: error: no matching function for call
 to ‘CorrelationEngineManager::getUniqueLabels(std::vector&)’ CorrelationEngineManager.h:23: note:
 candidates are: std::vector
 CorrelationEngineManager::getUniqueLabels(std::vector) make: *** [CorrelationEngineManager.o] Error 1