The sequence of execution before FastAPI 0.106.0 was like this diagram:

			acctInfo.Buckets = append(acctInfo.Buckets, madmin.BucketAccessInfo{
				Name:                    bucket.Name,
				Created:                 bucket.Created,
				Size:                    size,
				Objects:                 objectsCount,
				ObjectSizesHistogram:    objectsHist,
				ObjectVersionsHistogram: versionsHist,
				PrefixUsage:             prefixUsage,
				Details: &madmin.BucketDetails{

	deletedBucketsPrefix = ".deleted"

	// ETag (hex encoded md5sum) of empty string.
	emptyETag = "d41d8cd98f00b204e9800998ecf8427e"
)

// Global object layer mutex, used for safely updating object layer.
var globalObjLayerMutex sync.RWMutex

// Global object layer, only accessed by globalObjectAPI.
var globalObjectAPI ObjectLayer

type storageOpts struct {
	cleanUp     bool
	healthCheck bool
}

		expectStatus int
	}{
		{
			name:         "Success 206 Partial Content",
			statusCode:   206,
			body:         "partial-object-data",
			contentType:  "text/plain",
			expectStatus: 206,
		},
		{
			name:         "Success 200 OK",
			statusCode:   200,
			body:         "full-object-data",
			contentType:  "application/json",
			expectStatus: 200,
		},
		{
			name:         "Client Error 400",

undeleteable-object.tar multisitea/data/disterasure/xl3/bucket/2/xl.meta XL2 Æ R Ä$•Ä Ó É ýG7xÄ â”{± Å &ƒ¤Type ¥V2ObjÞ ¢IDÄ ¤DDirÄ wÿhY ªFn€ Äw( ’¦EcAlgo £EcM £EcN §EcBSizeÒ §EcIndex ¦EcDistœ ¨CSumAlgo ¨PartNums‘ ©PartETagsÀ©PartSizes‘Ò P ªPartASizes‘Ò P ¤SizeÒ P ¥MTimeÓ É ýG7x§MetaSys€§MetaUsr‚¬content-typeªtext/plain¤etagÙ 4b412ab80fe1268b9de7¡v ΑÈcÑ multisitea/data/disterasure/xl3/bucket/2/77ff6859-03aa-466e-8018-c477288f1092/part.1 multisitea/data/disterasure/xl3/.minio.sys/._format.json...

		return true
	}

	// Object content should be persisted.
	return false
}

// Headers to be set of object content is not going to be written to the client.
func writeHeadersPrecondition(w http.ResponseWriter, objInfo ObjectInfo) {
	// set common headers
	setCommonHeaders(w)

	// set object-related metadata headers

		// Test cases with valid but non-existing bucket names and invalid object name (Test number 7-8).
		{"test-getobjectinfo", "", ObjectInfo{}, ObjectNameInvalid{Bucket: "test-getobjectinfo", Object: ""}, false},
		{"test-getobjectinfo", "", ObjectInfo{}, ObjectNameInvalid{Bucket: "test-getobjectinfo", Object: ""}, false},
		// Test cases with non-existing object name with existing bucket (Test number 9-11).

		Description:    desc,
		Code:           code,
	}
}

// GetObjectLambdaHandler - GET Object with transformed data via lambda functions
// ----------
// This implementation of the GET operation applies lambda functions and returns the
// response generated via the lambda functions. To use this API, you must have READ access
// to the object.
func (api objectAPIHandlers) GetObjectLambdaHandler(w http.ResponseWriter, r *http.Request) {

// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful

s3-object-lambda.ap-southeast-3.amazonaws.com
s3-object-lambda.ap-southeast-4.amazonaws.com
s3-object-lambda.ap-southeast-5.amazonaws.com
s3-object-lambda.ca-central-1.amazonaws.com
s3-object-lambda.ca-west-1.amazonaws.com
s3-object-lambda.cn-north-1.amazonaws.com.cn
s3-object-lambda.cn-northwest-1.amazonaws.com.cn
s3-object-lambda.eu-central-1.amazonaws.com
s3-object-lambda.eu-central-2.amazonaws.com