Check If an Object Is a Valid Effectclass Object
is_effectclass(x, message = c("none", "warning", "error"))The object to test.
What to do when the object is not a valid effectclass object.
"none": return FALSE with a message.
"warning": return FALSE with a warning().
"error": return an error.
A single TRUE or FALSE value.
Other utils:
change_breaks(),
change_labels(),
unlist()