- raise(Puppet::ParseError, "unique(): Wrong number of arguments " +
- "given (#{arguments.size} for 1)") if arguments.size < 1
+ if Puppet::Util::Package.versioncmp(Puppet.version, '5.0.0') >= 0
+ function_deprecation([:unique, 'This method is deprecated, please use the core puppet unique function. There is further documentation for the function in the release notes of Puppet 5.0.'])
+ end
+
+ raise(Puppet::ParseError, "unique(): Wrong number of arguments given (#{arguments.size} for 1)") if arguments.size < 1