ReplaceLeaf
fssh_status_t ReplaceLeaf(const char *newLeaf);
status_t ReplaceLeaf(const char* newLeaf);
error = path->ReplaceLeaf(name);
status_t status = path.ReplaceLeaf("x");
status = path.ReplaceLeaf(NULL);
status = path.ReplaceLeaf("");
status = path.ReplaceLeaf("c");