fn check_s4_generic_collisions(parsed: &ParsedImpl) -> Result<()>Expand description
Two instance methods of one S4 impl block that dispatch through the same
generic emit two setMethod("<generic>", "<Class>", ...) calls with the
same signature, and the second silently replaces the first. The default
generic follows the R method name (s4_<r_name>), so r_name = "x" next to
a method x is one way to get there; two equal s4(generic = "...")
overrides are another.