// Should not throw exception
    }

    // Test addFieldLog with existing field
    public void test_addFieldLog_existingField() {
        Map<String, List<String>> fieldLogMap = new HashMap<>();
        List<String> existingList = new ArrayList<>();
        existingList.add("existing");
        fieldLogMap.put("field", existingList);

### Existing object replication

		expectedSync: false,
	},
	{ // 2. existing object replication config enabled, no versioning
		name:         "existing object replication config enabled, no versioning",
		info:         ObjectInfo{Size: 100},
		rcfg:         replicationConfig{Config: &configs[0]},
		expectedSync: false,
	},
	{ // 3. existing object replication config enabled, versioning suspended

    public void test_update() throws Exception {
        writeTestFile("a,b => c\nd,e => f\n");

        // Get existing item
        OptionalEntity<CharMappingItem> existing = charMappingFile.get(1L);
        assertTrue(existing.isPresent());

        // Update the item
        CharMappingItem updateItem = existing.get();
        updateItem.setNewInputs(new String[] { "m", "n" });
        updateItem.setNewOutput("o");

```

### Existing object replication

Existing object replication as detailed [here](https://aws.amazon.com/blogs/storage/replicating-existing-objects-between-s3-buckets/) can be enabled by passing `existing-objects` as a value to `--replicate` flag while adding or editing a replication rule.

	--remote-bucket http://minio:minio123@127.0.0.1:9004/bucket \
	--replicate "existing-objects,delete,delete-marker,replica-metadata-sync"
sleep 1

echo "adding replication rule for b -> a : ${remote_arn}"
./mc replicate add siteb/bucket/ \
	--remote-bucket http://minio:minio123@127.0.0.1:9001/bucket \
	--replicate "existing-objects,delete,delete-marker,replica-metadata-sync"
sleep 1

name: Feature Enhancement Request
description: I want to make an existing feature better
labels: ["type=enhancement"]
body:
  - type: markdown
    attributes:
      value: >
        Filing feature requests is one of the most popular ways to contribute to Guava.


        Be aware, though: most feature requests are not accepted, even if they're suggested by
        a full-time Guava team member. [Feedback](https://stackoverflow.com/a/4543114) from our

    public void updateChild(String childName, SmbFileAttributes attrs) {
        lock.writeLock().lock();
        try {
            FileInfo existing = children.get(childName);
            FileInfo newInfo = new FileInfo(childName, attrs);
            
            if (existing == null || !existing.matches(attrs)) {
                children.put(childName, newInfo);
                hasChanges = true;

        Map<String, Object> dataMap = new HashMap<>();
        dataMap.put("url", "http://example.com/test");
        dataMap.put("doc_id", "existing-doc-id");

        indexUpdateCallback.store(paramMap, dataMap);

        // Should keep existing doc_id
        assertEquals("existing-doc-id", dataMap.get("doc_id"));
    }

    public void test_concurrentStore() throws Exception {
        // Test thread safety

     * found, the existing values are replaced.
     */
    operator fun set(
      name: String,
      value: Date,
    ) = set(name, value.toHttpDateString())

    /**
     * Set a field with the specified instant. If the field is not found, it is added. If the field
     * is found, the existing values are replaced.
     */