uid and gid are defined as uint32 in linux. Some systems create
   * (intended or unintended) <nfsnobody, 4294967294> kind of <name,Id>
   * mapping, where 4294967294 is 2**32-2 as unsigned int32. As an example,
   *   https://bugzilla.redhat.com/show_bug.cgi?id=511876.
uid and gid are defined as uint32 in linux. Some systems create
   * (intended or unintended) <nfsnobody, 4294967294> kind of <name,Id>
   * mapping, where 4294967294 is 2**32-2 as unsigned int32. As an example,
   *   https://bugzilla.redhat.com/show_bug.cgi?id=511876. | ShellBasedIdMapping.java