docs: @Override
      public ParseResult parse(Source source) {
          if (!testSrcInfo.equals(source.getSrcInfo())) {
              throw new RuntimeException("testSrcInfo and source.getSrcInfo were not equal. testSrcInfo = " + testSrcInfo + ", source.getSrcInfo = " + source.getSrcInfo());
          }
          try {
              BufferedReader reader = source.createReader();
              try {
                  if (!testString.equals(reader.readLine())) {
                      throw new RuntimeException("testString and reader.readLine() were not equal");
                  }
                  final String secondLine = reader.readLine();
                  if (secondLine != null) {
                      throw new RuntimeException("got a second line '" + secondLine + "' from the reader");
                  }
              } finally {
                  reader.close();
              }
          } catch (IOException e) {
              throw new RuntimeException(e);
          }
          return testResult;
      }