I know this is an old topic, but just in case.
Sometimes there are branches that hang low to the ground. I buried part of the branch in the soil. I bent it so the leaves were not in the soil. I must've left it for a long time, seems like a year. I pulled away some of the soil and to my surprise there were roots. I cut the branch where it initially went into the soil. The cut branch didn't die. Couple months later I dug it up and placed it into a pot. I gave the plant to my in-law. I don't know what really happened but she transplanted it and now she says it's on life support, I guess the transplant was not successful. I plan to try this again as there are a couple branches hanging near the ground again.