Section 560 - Investigations and examinations1. The superintendent shall have the power to make such investigations as he shall deem necessary to determine whether any licensee or any other person has violated any of the provisions of this article, or whether any licensee has conducted himself in such manner as would justify the revocation of his license, and to the extent necessary therefor, he may require the attendance of and examine any person under oath, and shall have the power to compel the production of all relevant books, records, accounts, and documents.2. The superintendent shall have the power to make such examinations of the books, records, accounts and documents used in the business of any licensee as he shall deem necessary to determine whether any such licensee has violated any of the provisions of this article.3. The expenses incurred in making any examination pursuant to subdivision two of this section five hundred sixty shall be assessed against and paid by the licensee so examined, except that traveling and subsistence expenses so incurred shall be charged against and paid by licensees in such proportions as the superintendent shall deem just and reasonable, and such proportionate charges shall be added to the assessment of the other expenses incurred upon each examination. Upon written notice by the superintendent of the total amount of such assessment, the licensee shall become liable for and shall pay such assessment to the superintendent.4. All reports of examinations and investigations, and all correspondence and memoranda concerning or arising out of such examinations or investigations, including any duly authenticated copy or copies thereof in the possession of any licensee or the department of financial services, shall be confidential communications, shall not be subject to subpoena and shall not be made public unless, in the judgment of the superintendent, the ends of justice and the public advantage will be subserved by the publication thereof, in which event he may publish or authorize the publication of a copy of any such report or other material referred to in this subdivision four, or any part thereof, in such manner as he may deem proper.