code: private void processEnvEntries(List<EnvEntry> envEntries) {
          if (envEntries != null) {
              for (EnvEntry envEntry : envEntries) {
                  if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
                      Tr.debug(tc, "processing envEntry", envEntry.getName(), envEntry.getValue());
                  }
                  if (SYNC_TO_OS_THREAD_ENV_ENTRY_KEY.equals(envEntry.getName())) {
                      syncToOSThread = Boolean.parseBoolean(envEntry.getValue());
                  }
              }
          }
      }
docs: Process the env-entry's from the application's deployment descriptor.