Where can I find the Arria PCIe _soft_ IP library in Quartus? (Not PCIe HIP)

The PCIe SOFT IP compiler is mentioned here: https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_pci_express.pdf Table 1–2. IP Compiler for PCI Express Features (Part 1 o...