This virtual class represents a canonical expression.
# S4 method for Canonical
canonicalize(object)# S4 method for Canonical
variables(object)
# S4 method for Canonical
parameters(object)
# S4 method for Canonical
constants(object)
# S4 method for Canonical
get_data(object)
canonicalize: The graph implementation of the input.
get_data: Information needed to reconstruct the expression aside from its arguments.