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+/*
+* There is no changes to pdf.js in this file, but only a note about a change that has been done in it.
+*
+* In the module account_invoice_extract, the the code need to react to the 'pagerendered' event triggered by
+* pdf.js. However in recent version of pdf.js, event are not visible outside of the library, except if the 
+* 'eventBusDispatchToDOM' has been set to true.
+*
+* We tried to set this option from outside of the library but without success, as our pdf viewer is in an iframe.
+* There is no state of the iframe in which we can add an event listener to set the option.
+* pdf.js has an event used to signal when we can set settings, called 'webviewerloaded'.
+* This event is triggered in an EventListener attached to the 'DOMContentLoaded' event.
+* So, to list options we had, we could:
+* a) add an eventListener to the iframe document or window to react to 'webviewerloaded'. This doesn't work as 
+*    document and windows are not the definitive ones and won't catche the event later.
+* b) add an eventListener to the iframe to react to 'DOMContentLoaded', which doens't work too as our listener will be called
+*    after the pdf.js one.
+*
+* Finally the option was choosed to modify the default value of this option directly in pdf.js as no hook worked in the
+* 'account_invoice_extract' module.
+*/