Translates the PartialTimestamp into a DRMAA specified time string and appends the string to the given StringBuffer. Since the PartialTimestampFormat class doesn't use fields, the fieldPosition parameter is ignored. This method is equivalent to
stringBuffer.append (format (obj)).
In order to represent a PartialTimestamp object as a string, the PartialTimestamp object cannot have an unset field that is less significant than the most significant set field. TThat is to say that if CENTURY is set, YEAR, MONTH, and DAY_OF_MONTH must also be set. SECONDS and ZONE_OFFSET are always optional.
@param obj the object to format
@param stringBuffer the StringBuffer to which to append the results
@param fieldPosition ignored
@return the stringBuffer parameter