resources/src/main/java/org/robolectric/res/Qualifiers.java
@Deprecated
  public static String addPlatformVersion(String qualifiers, int apiLevel) {
    int versionQualifierApiLevel = Qualifiers.getPlatformVersion(qualifiers);
    if (versionQualifierApiLevel == -1) {
      if (qualifiers.length() > 0) {
        qualifiers += "-";
      }
      qualifiers += "v" + apiLevel;
    }
    return qualifiers;
  }
@Deprecated
  public static String addPlatformVersion(String qualifiers, int apiLevel) {
    int versionQualifierApiLevel = Qualifiers.getPlatformVersion(qualifiers);
    if (versionQualifierApiLevel == -1) {
      if (qualifiers.length() > 0) {
        qualifiers += "-";
      }
      qualifiers += "v" + apiLevel;
    }
    return qualifiers;
  }
If the Config already has a version qualifier, do nothing. Otherwise, add a version
qualifier for the target api level (which comes from the manifest or Config.sdk()).

@deprecated Figure something else out.