getRepositories() is removed in Bamboo 6.10.4

We have Upgraded our bamboo version from 5.9.7 to 6.10.4. Due to a number of deprecations and removals in the API, our plugin codebase has been effected. Found a specific code segment needs to be updated and Not sure if there are any other changes also we need to do so.

src\main\java\com\atg\bamboo\plugins\web\condition\DetailedStatusTabCondition.java is as below.

package com.atg.bamboo.plugins.web.condition;

import com.atlassian.bamboo.plan.Plan;
import com.atlassian.bamboo.plan.PlanHelper;
import com.atlassian.bamboo.plan.PlanManager;
import com.atlassian.bamboo.repository.Repository;
import com.atlassian.plugin.PluginParseException;
import com.atlassian.plugin.web.Condition;
import org.apache.log4j.Logger;

import java.util.List;
import java.util.Map;

/**
 * @author ddziamen
 */
public class DetailedStatusTabCondition implements Condition {
    private static final Logger log = Logger.getLogger(DetailedStatusTabCondition.class);
    private PlanManager planManager;

    public void init(Map params) throws PluginParseException {
    }

    /**
     * @return true only if it is Devtools repository
     */
    public boolean shouldDisplay(Map context) {
        String buildKey = context.get("buildKey") != null ? (String)context.get("buildKey") : null;
        Plan plan = planManager.getPlanByKey(buildKey);
        List<Repository> repositories = PlanHelper.getRepositories(plan);
        for(Repository repository : repositories) {
            if(repository.getKey().endsWith("devtoolsP4")) return true;
        }
        return false;
    }

    public void setPlanManager(PlanManager planManager) {
        this.planManager = planManager;
    }
}

References: getRepositories(ImmutablePlan plan) is not there in 6.10.4 version Bamboo.

https://docs.atlassian.com/atlassian-bamboo/5.9.7/com/atlassian/bamboo/plan/PlanHelper.html
https://docs.atlassian.com/atlassian-bamboo/6.10.4/com/atlassian/bamboo/plan/PlanHelper.html

Is there a way to replace the above or any alternative to modify the code.

Thanks in advance.