Appends the chronology name to the formatter.
!(p)
The calendar system name will be output during a format.
If the chronology cannot be obtained then an exception will be thrown.
@param textStyle the text style to use, not null
@return this, for chaining, not null
Appends the chronology name to the formatter. !(p) The calendar system name will be output during a format. If the chronology cannot be obtained then an exception will be thrown.
@param textStyle the text style to use, not null @return this, for chaining, not null