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 44         // Workaround for HUDSON-5977.. this block can be removed whenever
 45         // copyartifact plugin raises its minimum Hudson version to whatever
 46         // release fixes #5977 (1.379).
 47         // Make a call to copy a small file, to get all class-loading to happen.
 48         // When we copy the real stuff there won't be any classloader requests
 49         // coming the other direction, which due to full-buffer-deadlock problem
 50         // can cause slave to hang.
 51         hudson.PluginWrapper pw = Hudson.getInstance().getPluginManager().getPlugin("copyartifact");
 52         if (pw==null) { System.out.println("foo"); return; }
 53         URL base = pw.baseResourceURL;
 54         if (base != null && "file".equals(base.getProtocol())) {
 55             FilePath tmp = baseTargetDir.createTempDir("copyartifact", ".dir");
 56             new FilePath(new File(base.getPath())).copyRecursiveTo("HUDSON-5977/**", tmp);
 57             tmp.deleteRecursive();
 58         }
 59         // End workaround