    # File lib/chef/resource.rb, line 285
        def load_prior_resource
          begin
            prior_resource = run_context.resource_collection.lookup(self.to_s)
            # if we get here, there is a prior resource (otherwise we'd have jumped
            # to the rescue clause).
            Chef::Log.warn("Cloning resource attributes for #{self.to_s} from prior resource (CHEF-3694)")
            Chef::Log.warn("Previous #{prior_resource}: #{prior_resource.source_line}") if prior_resource.source_line
            Chef::Log.warn("Current  #{self}: #{self.source_line}") if self.source_line
            prior_resource.instance_variables.each do |iv|
              unless iv.to_sym == :@source_line || iv.to_sym == :@action || iv.to_sym == :@not_if || iv.to_sym == :@only_if
                self.instance_variable_set(iv, prior_resource.instance_variable_get(iv))
              end
            end
            true
          rescue Chef::Exceptions::ResourceNotFound => e
            true
          end
        end