The project requires programming a method to redefine the 'toUnicode' mapping in a large number of PDF documents written in Hindi. The current mapping is wrong and makes it impossible to extract the text. The mapping needs to ensure that the glyphs visible in the PDF are accurately captured when the text is extracted. The method should be easily replicable and scalable across thousands of PDFs. Try and copy-paste out of the sample attached to see the problem and what needs to be fixed.