boolean () { if (! myStartExistsKnown) { final SvnFileUrlMapping mapping = myVcs.getSvnFileUrlMapping(); final RootUrlInfo rootUrlInfo = mapping.getWcRootForUrl(myUrl); if (rootUrlInfo == null) return true; final VirtualFile vf = rootUrlInfo.getVirtualFile(); final Info info = myVcs.getInfo(vf); if (info == null || !info.getRevision().isValid()) return false; myStartNumber = info.getRevision().getNumber(); myStartExistsKnown = true; } return true; }