code: public long getLong(String name, long defaultValue) {
  		String valueString = getTrimmed(name);
  		if (valueString == null)
  			return defaultValue;
  		String hexString = getHexDigits(valueString);
  		if (hexString != null) {
  			return Long.parseLong(hexString, 16);
  		}
  		return Long.parseLong(valueString);
  	}
docs: Get the value of the <code>name</code> property as a <code>long</code>.
  If no such property exists, the provided default value is returned,
  or if the specified value is not a valid <code>long</code>,
  then an error is thrown.
  
  @param name property name.
  @param defaultValue default value.
  @throws NumberFormatException when the value is invalid
  @return property value as a <code>long</code>,
  or <code>defaultValue</code>.