// A is 65, a is 97
		if v >= 'a' {
			b.WriteRune(v)
			continue
		}
		// v is capital letter here
		// disregard first letter
		// add underscore if last letter is capital letter
		// add underscore when previous letter is lowercase
		// add underscore when next letter is lowercase
		if (i != 0 || i == l-1) && ((i > 0 && rune(camel[i-1]) >= 'a') ||
			(i < l-1 && rune(camel[i+1]) >= 'a')) {

		},
		// inputParts - 3.
		// Case with valid parts,but parts are unsorted.
		// Part size greater than 5 MiB.
		{
			[]CompletePart{
				{ETag: validPartMD5, PartNumber: 6},
				{ETag: validPartMD5, PartNumber: 5},
			},
		},
		// inputParts - 4.
		// Case with valid part.
		// Part size greater than 5 MiB.
		{
			[]CompletePart{
				{ETag: validPartMD5, PartNumber: 5},