39Finally, as can be seen from the case-law referred to in paragraphs 29 and 30 above, however, recognition of a general presumption in respect of a new category of documents presupposes that it has first been shown that it is reasonably foreseeable that disclosure of the type of document falling within that category would in fact be liable to undermine the interest protected by the exception in question. Furthermore, as general presumptions constitute an exception to the rule that the EU institution concerned is obliged to carry out a specific and individual examination of every document which is the subject of a request for access and, more generally, to the principle that the public should have the widest possible access to the documents held by the institutions of the European Union, they must be interpreted and applied strictly (see judgment of 4 September 2018, ClientEarth v Commission, C‑57/16 P, EU:C:2018:660, paragraph 80 and the case-law cited).