code: public static String millis(@Nullable String function, String column, String alias) {
  		StringBuilder s = new StringBuilder(96).append("strftime('%s', ");
  		if (function != null) {
  			s.append(function).append('(').append(column).append(')');
  		} else {
  			s.append(column);
  		}
  		return s.append(") * 1000 AS ").append(alias).toString();
  	}
docs: Get an aliased result column that applies the aggregate function to the datetime column and
  converts the result to epoch milliseconds.
  
  @param function
  may be null to not apply a function
  @since 3.0.0