code: public static EntityLinkOperation linkOptions(String contentKeyAuthorizationPolicyId,
              String contentKeyAuthorizationPolicyOptionId) {
          String escapedContentKeyId = null;
          try {
              escapedContentKeyId = URLEncoder.encode(contentKeyAuthorizationPolicyOptionId, "UTF-8");
          } catch (UnsupportedEncodingException e) {
              throw new InvalidParameterException("contentKeyId");
          }
          URI contentKeyUri = URI
                  .create(String.format("ContentKeyAuthorizationPolicyOptions('%s')", escapedContentKeyId));
          return new EntityLinkOperation(ENTITY_SET, contentKeyAuthorizationPolicyId, "Options", contentKeyUri);
      }
docs: Link a content key authorization policy options.
  
  @param contentKeyAuthorizationPolicyId
  the content key authorization policy id
  @param contentKeyAuthorizationPolicyOptionId
  the content key authorization policy option id
  @return the entity action operation