docs: public String loadFromClassPath(String dataFile) {
          InputStream is = null;
          try {
  //            is = Thread.currentThread().getContextClassLoader().getResourceAsStream(dataFile);
              is = IoUtils.class.getResourceAsStream(dataFile);
              return toString(is);
          } catch (Throwable e) {
              throw new RuntimeException(String.format("Problem loading resource: '%s'" , dataFile), e);
          } finally {
              closeQuietly(is);
          }
      }