CallPattern callPattern = new CallPattern(m_longDistancePrefix + areaCode, CallDigits.VARIABLE_DIGITS);
StringBuilder prefix = new StringBuilder(); if (m_longDistancePrefix != null) { prefix.append(m_longDistancePrefix); } if (areaCode != null) { prefix.append(areaCode); } CallPattern callPattern = new CallPattern(prefix.toString(), CallDigits.VARIABLE_DIGITS);
    CallPattern calculateCallPattern(String areaCode) {        CallPattern callPattern = new CallPattern(m_longDistancePrefix + areaCode,                CallDigits.VARIABLE_DIGITS);        return callPattern;    }