Не удалось добавить расширение поведения "<var>X</var>" к поведению конечной точки "<var>Y</var>", так как выделенный тип поведения не реализует интерфейс IEndpointBehavior.

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Cannot add the '<var>X</var>' behavior extension to '<var>Y</var>' endpoint behavior because the underlying behavior type does not implement the IEndpointBehavior interface.

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