public with sharing class LeadTriggerHandler
{
    @testVisible
    static Boolean bypassTrigger = false;

    @testVisible
    static Set<Id> recentlyAssignedOwners = null;

    final List<Lead> newLeads;
    final Map<Id, Lead> oldmap;
    public LeadTriggerHandler(List<Lead> newLeads, Map<Id, Lead> oldmap)
    {for (Lead a : newLeads)
        if(a.Marketing_List_CEC__c == false)
        continue;
    {
        this.newLeads = newLeads;
        this.oldmap = oldmap;
    }
    }