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TaskUtility.cls

public class TaskUtility
{
    public static String getTaskPriority(String leadCountry)
    {
        if(String.isBlank(leadCountry)||leadCountry.length()>2)
        {
            return null;
            
        }
        String taskPriority;
        if(leadCountry=='US')
        {
            taskPriority='High';
           
        }
        else
        {
            taskPriority='Normal';
        }
        return taskPriority;
    }
}