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This is not an authoritative answer (as in: OSRF/ex-Willow Garage ppl should perhaps way in), but after some searching it would appear that the plug template files were never actually really "provided in the pr2_plugs_actions" folder, but downloaded (at build time) by CMake from pr.willowgarage.com (see here). This was removed in 79da1f37 for some reason (the commit message is unfortunately rather terse and doesn't tell us why: "bugs").

That host doesn't exist any more, but it would seem the files on that host (or at least the ones that you seem interested in) have been moved to download.ros.org, specifically to download.ros.org/data/outlet_detection.

I want to note though, that given the age of the packages and the fact that ROS has progressed (ie: changed) so much since then, I'm not confident things will work out-of-the-box, so even with those files, you'll probably run into problems.

This is not an authoritative answer (as in: OSRF/ex-Willow Garage ppl should perhaps way in), but after some searching it would appear that the plug template files were never actually really "provided in the pr2_plugs_actions" folder, but downloaded (at build time) by CMake from pr.willowgarage.com (see here). This was removed in 79da1f37 for some reason (the commit message is unfortunately rather terse and doesn't tell us why: "bugs").

That host doesn't exist any more, but it would seem the files on that host (or at least the ones that you seem interested in) have been moved to download.ros.org, specifically to download.ros.org/data/outlet_detection.

I want to note though, that given the age of the packages and the fact that ROS has progressed (ie: changed) so much since then, I'm not confident things will work out-of-the-box, so even with those files, you'll probably run into problems.