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auxiliary classes; may contain either a numeric vector or NULL [or a call / data.frame or NULL, respectively].
A virtual Class: No objects may be created from it.
No methods defined with class "numericorNULL", "CallorNULL", and "DataframeorNULL" in the signature.
Thomas Stabla [email protected], Florian Camphausen [email protected], Peter Ruckdeschel [email protected], Matthias Kohl [email protected]
Evaluation-class