@CanIgnoreReturnValue
  public PathSubject doesNotMatch(String syntaxAndPattern) {
    PathMatcher matcher = actual.getFileSystem().getPathMatcher(syntaxAndPattern);
    if (matcher.matches(actual)) {
      failWithActual("expected not to match", syntaxAndPattern);
    }
    return this;
  }
Asserts that the path does not match the given syntax and pattern.
jimfs/src/test/java/com/google/common/jimfs/PathSubject.java