ENDHEREDOC
+ # The deprecation function was being called twice, as validate_bool calls is_bool. I have removed it from here so it only calls deprecation once within is_bool.
+ # function_deprecation([:validate_bool, 'This method is deprecated, please use the stdlib validate_legacy function, with Stdlib::Compat::Bool. There is further documentation for validate_legacy function in the README.'])
+
unless args.length > 0 then
raise Puppet::ParseError, ("validate_bool(): wrong number of arguments (#{args.length}; must be > 0)")
end