private void findInstalls(String fileName) {
    readVersionsFile(fileName, (version, install) -> {
      Optional<String> parsedVersion = parseVersion(version);
      parsedVersion.ifPresent(s -> installs.put(s, install));
    });
  }
Returns a list of testable versions sorted from oldest to newest

<p>
Note: if you need to compare version strings use {@link TestVersion#compare(String, String)} or
{@link TestVersion#equals}.

@return a list of testable versions sorted from oldest to newest
geode-junit/src/main/java/org/apache/geode/test/version/VersionManager.java