vec_ptype_full() displays the full type of the vector. vec_ptype_abbr()
provides an abbreviated summary suitable for use in a column heading.
S3 dispatch
The default method for vec_ptype_full() uses the first element of the
class vector. Override this method if your class has parameters that should
be prominently displayed.
The default method for vec_ptype_abbr() abbreviate()s vec_ptype_full()
to 8 characters. You should almost always override, aiming for 4-6
characters where possible.
These arguments are handled by the generic and not passed to methods:
prefix_namedsuffix_shape
