ETag:       partETag,
		Size:       partSize,
		ActualSize: actualSize,
		ModTime:    modTime,
		Index:      idx,
		Checksums:  checksums,
	}

	// Update part info if it already exists.
	for i, part := range fi.Parts {
		if partNumber == part.Number {
			fi.Parts[i] = partInfo
			return
		}
	}

	// Proceed to include new part info.
	fi.Parts = append(fi.Parts, partInfo)

		Ctxt: p.ctxt,
		As:   obj.AFUNCDATA,
		Pos:  p.pos(),
		From: valueAddr,
		To:   nameAddr,
	}
	p.append(prog, "", true)
}

// asmJump assembles a jump instruction.
// JMP	R1
// JMP	exit
// JMP	3(PC)
func (p *Parser) asmJump(op obj.As, cond string, a []obj.Addr) {
	var target *obj.Addr
	prog := &obj.Prog{
		Ctxt: p.ctxt,
		Pos:  p.pos(),
		As:   op,
	}
	targetAddr := &prog.To

                org = activationFile.getMissing();
                val = interpolate(org);
                if (org != val) {
                    activationFile.setMissing(val);
                }
                // Exists
                org = activationFile.getExists();
                val = interpolate(org);
                if (org != val) {
                    activationFile.setExists(val);
                }
            }

     * First, this method resolves the given root against the {@linkplain #getBaseDirectory() base directory},
     * then normalizes the path. If a source already exists for the same scope, language and normalized directory,
     * this method does nothing. Otherwise, the normalized directory is added as a new {@link SourceRoot} element.
     *

        return pomRepositories;
    }

    private boolean hasFile(Artifact artifact) {
        return artifact != null
                && artifact.getFile() != null
                && artifact.getFile().exists();
    }

    private List<ArtifactRepository> aggregateRepositories(
            List<ArtifactRepository> requestRepositories, List<ArtifactRepository> pomRepositories) {

	}

	// enable deleteExpired() running in separate goroutine for cache with non-zero TTL
	//
	// Important: done channel is never closed, so deleteExpired() goroutine will never exit,
	// it's decided to add functionality to close it in the version later than v2.
	if res.ttl != noEvictionTTL {
		go func(done <-chan struct{}) {
			ticker := time.NewTicker(res.ttl / numBuckets)
			defer ticker.Stop()

		}

		maxRetries := h.config.MaxRetry

	retry:
		// If the channel reaches above half capacity
		// we spawn more workers. The workers spawned
		// from this main worker routine will exit
		// once the channel drops below half capacity
		// and when it's been at least 30 seconds since
		// we launched a new worker.
		if mainWorker && len(h.logCh) > cap(h.logCh)/2 {
			nWorkers := h.workers.Load()

		case "fl":
			z.File, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "File")
				return
			}
		case "ex":
			z.Exists, err = dc.ReadBool()
			if err != nil {
				err = msgp.WrapError(err, "Exists")
				return
			}
		case "er":
			z.Error, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "Error")
				return
			}

			}

			if typ&os.ModeDir != 0 {
				h := hashPath(entName)
				_, exists := f.oldCache.Cache[h.Key()]
				if h == thisHash {
					return nil
				}
				this := cachedFolder{name: entName, parent: &thisHash, objectHealProbDiv: folder.objectHealProbDiv}
				delete(abandonedChildren, h.Key()) // h.Key() already accounted for.
				if exists {
					existingFolders = append(existingFolders, this)

Nesse caso, o path original `/app` seria servido em `/api/v1/app`.

Embora todo o seu código esteja escrito assumindo que existe apenas `/app`.

{* ../../docs_src/behind_a_proxy/tutorial001_py39.py hl[6] *}