@Override
  public Map<String, FilePermissions> getExtraDirectoryPermissions() {
    return TaskCommon.convertPermissionsMap(
        jibExtension.getExtraDirectories().getPermissions().get());
  }
Gradle-specific adapter for providing raw configuration parameter values.
jib-gradle-plugin/src/main/java/com/google/cloud/tools/jib/gradle/GradleRawConfiguration.java