I believe that the statement you have wrote is invalid. For a black hole is an infinite density object in space that is a size which measures smaller than ever was capalbe by humans. Furthermore, a black hole doesn't create a barrier through which all matter can be sucked in through one realm of space and released into another part of space. For a black hole is a three-dimensional sphere that is apple to deflect or even "suck" all matter in this universe. What I think happens to the matter that virtually is "sucked" into a black hole is that it is destroyed. Stars have the capability of creating energy when hydrogen atoms are compressed into helium energy is created and released. If stars have that capability of creating energy. Why can't high mass stars destory energy. If the gravity is so great that a black hole is invisible where does it go? Well the only answer that I have is that it is compressed along with the rest of the collasping star.