magnet:?xt=urn:btih:a82219b8fa708cc1f8d3e764f9f32874d44f071c&xt=urn:md5:1c1310bcdfbf79feda972abb2184d6d9&xl=159516&dn=5.12.5-0-201909090458qtconcurrent-documentation.7z&as=https://download.qt.io/online/qtsdkrepository/linux_x64/desktop/qt5_5125_src_doc_examples/qt.qt5.5125.doc/5.12.5-0-201909090458qtconcurrent-documentation.7z&tr=http://bt.qt-project.org:6969/announce