Saw this vine growing on a fence in the neighborhood. Initially thought it is some form of jasmine plant. But suddenly the big fat seedpods caught my eye and realized it is not a jasmine. The seedpod is about 3 and a half inches long and slightly different shape from a chayote squash. When I pulled an unripe pod from the vine a white milky sap started coming out of it. What is this vine? Is the pod edible or poisonous?