Pode ser que você precise comunicar ao cliente que:

* O cliente não tem direitos para realizar aquela operação.
* O cliente não tem acesso aquele recurso.
* O item que o cliente está tentando acessar não existe.
* etc.


Nesses casos, você normalmente retornaria um **HTTP status code** próximo ao status code na faixa do status code **400** (do 400 ao 499).

        String fullMessage = (message != null) ? message : "";

        // To break out of possible endless loop when getCause returns "this", or dejaVu for n-level recursion (n>1)
        Set<Throwable> dejaVu = Collections.newSetFromMap(new IdentityHashMap<>());
        for (Throwable t = exception; t != null && t != t.getCause(); t = t.getCause()) {

        .withFeatures(computeElementSetFeatures(parentBuilder.getFeatures()))
        .suppressing(parentBuilder.getSuppressedTests())
        .createTestSuite();
  }

  /**
   * To avoid infinite recursion, test suites with these marker features won't have derived suites
   * created for them.
   */
  enum NoRecurse implements Feature<Void> {
    SUBMULTISET,
    DESCENDING;

    @Override

      - name: atomic
      - name: call-to-gc
      - name: duplicated-imports
      - name: string-of-int
      - name: defer
        arguments:
          - - "call-chain"
      - name: unconditional-recursion
      - name: identical-branches
        # the following rules can be enabled in the future
        # - name: empty-lines
        # - name: confusing-results
        # - name: empty-block

	if err != nil {
		return consumed, nil, typ, err
	}

	return consumed, nameBuf[:nameLen], typ, nil
}

// readDirFn applies the fn() function on each entries at dirPath, doesn't recurse into
// the directory itself, if the dirPath doesn't exist this function doesn't return
// an error.
func readDirFn(dirPath string, fn func(name string, typ os.FileMode) error) error {

	if tok != '\n' {
		in.Error("syntax error in #undef for macro:", name)
	}
	delete(in.macros, name)
}

func (in *Input) Push(r TokenReader) {
	if len(in.tr) > 100 {
		in.Error("input recursion")
	}
	in.Stack.Push(r)
}

func (in *Input) Close() {

    return getMethod(ListSubListTester.class, "testSubList_subListRemoveAffectsOriginalLargeList");
  }

  /*
   * TODO: perform all List tests on subList(), but beware infinite recursion
   */

    return getMethod(ListSubListTester.class, "testSubList_subListRemoveAffectsOriginalLargeList");
  }

  /*
   * TODO: perform all List tests on subList(), but beware infinite recursion
   */

func (d *Decoder) Pos() int { return int(d.pos) }

// Err returns the most recent decoder error if any, or nil
func (d *Decoder) Err() error { return d.err }

// MaxDepth will set the maximum recursion depth.
// If the maximum depth is exceeded, ErrMaxDepth is returned.
// Less than or 0 means no limit (default).
func (d *Decoder) MaxDepth(n int) *Decoder {
	d.maxDepth = n
	return d
}

func (b *Reader) Reset(r io.Reader) {
	// If a Reader r is passed to NewReader, NewReader will return r.
	// Different layers of code may do that, and then later pass r
	// to Reset. Avoid infinite recursion in that case.
	if b == r {
		return
	}
	if b.buf == nil {
		b.buf = make([]byte, defaultBufSize)
	}
	b.reset(b.buf, r)
}

func (b *Reader) reset(buf []byte, r io.Reader) {
	*b = Reader{