@Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        StrEntry strEntry = (StrEntry) o;

        if (key != null ? !key.equals(strEntry.key) : strEntry.key != null) return false;
        if (value != null ? !value.equals(strEntry.value) : strEntry.value != null) return false;

        return true;
    }