[DOCS] PORT Add examples of using named outputs in extensions (#17622) (#17754)

* [DOCS] Add examples of using named outputs in extensions (#17622)

* [DOCS]Add examples of using named outputs in extensions

* Fix opset

* Apply suggestions from code review

Co-authored-by: Tatiana Savina <tatiana.savina@intel.com>

* Update docs/Extensibility_UG/frontend_extensions.md

* Add reference to external docs

* Update docs/Extensibility_UG/frontend_extensions.md

Co-authored-by: Tatiana Savina <tatiana.savina@intel.com>

---------

Co-authored-by: Tatiana Savina <tatiana.savina@intel.com>

* Update docs/Extensibility_UG/frontend_extensions.md

---------

Co-authored-by: Maxim Vafin <maxim.vafin@intel.com>
Co-authored-by: Karol Blaszczak <karol.blaszczak@intel.com>

docs/Extensibility_UG/frontend_extensions.md

@@ -381,6 +381,25 @@ To access original framework operation attribute value and connect to inputs, ``
 The conversion function should return a vector of node outputs that are mapped to 
 corresponding outputs of the original framework operation in the same order.
 
+Some frameworks require output names of the operation to be provided during conversion.
+For PaddlePaddle operations, it is generally necessary to provide names for all outputs using the ``NamedOutputs`` container.
+Usually those names can be found in source code of the individual operation in PaddlePaddle code.
+The following example shows such conversion for the ``top_k_v2`` operation.
+
+.. doxygensnippet:: docs/snippets/ov_extensions.cpp
+   :language: cpp
+   :fragment: [frontend_extension_paddle_TopK]
+
+For TensorFlow framework, if an operation has more than one output, it is recommended to assign names to
+those outputs using the ``NamedOutputVector`` structure which allows both indexed and named output access.
+For a description of TensorFlow operations, including the names of their outputs, refer to the
+`tf.raw_ops <https://www.tensorflow.org/api_docs/python/tf/raw_ops/>`__ documentation page.
+The next example shows such conversion for the ``TopKV2`` operation.
+
+.. doxygensnippet:: docs/snippets/ov_extensions.cpp
+   :language: cpp
+   :fragment: [frontend_extension_tf_TopK]
+
 @endsphinxdirective