get id of this field . concode_field_sep int JUNE concode_elem_sep int AUGUST concode_elem_sep QName DURATION_DAYTIME concode_elem_sep int FIELD_UNDEFINED concode_elem_sep Field DAYS concode_elem_sep int MAY concode_elem_sep int OCTOBER concode_elem_sep int MAX_TIMEZONE_OFFSET concode_elem_sep QName GYEAR concode_elem_sep QName DURATION concode_elem_sep Field MONTHS concode_elem_sep int id concode_elem_sep Field SECONDS concode_elem_sep QName TIME concode_elem_sep QName DATE concode_elem_sep QName GDAY concode_elem_sep int MIN_TIMEZONE_OFFSET concode_elem_sep int SEPTEMBER concode_elem_sep int APRIL concode_elem_sep int LESSER concode_elem_sep int JULY concode_elem_sep Field YEARS concode_elem_sep int FEBRUARY concode_elem_sep int DECEMBER concode_elem_sep String str concode_elem_sep int NOVEMBER concode_elem_sep int MARCH concode_elem_sep int EQUAL concode_elem_sep QName GMONTHDAY concode_elem_sep int GREATER concode_elem_sep QName DATETIME concode_elem_sep Field HOURS concode_elem_sep QName GYEARMONTH concode_elem_sep QName DURATION_YEARMONTH concode_elem_sep int INDETERMINATE concode_elem_sep Field MINUTES concode_elem_sep QName GMONTH concode_elem_sep int JANUARY concode_field_sep String toString
int function ( ) { return id ; }