These options will be used on objects of class 'yearqtr'.
opts_yearqtr(constructor = c("as.yearqtr", "yearqtr", "next"), ...)An object of class <constructive_options/constructive_options_yearqtr>
Depending on constructor, we construct the object as follows:
"as.yearqtr" (default): We build the object using zoo::as.yearqtr() on
a string in the format "2000 Q3".
"yearqtr" : We build the object using zoo::yearqtr() on a double in the
format 2000.5
"next" : Use the constructor for the next supported class.