step sets the class of the step`` andcheck` is for checks.step sets the class of the step`` andcheck` is for checks.
step(subclass, ..., .prefix = "step_")check(subclass, ..., .prefix = "check_")
A character string for the resulting class. For example,
if subclass = "blah" the step object that is returned has class
step_blah or step_blah depending on the context.
All arguments to the operator that should be returned.
Prefix to the subclass created.
A updated step or check with the new class.