Function normalizeIPv6Address

normalizeIPv6Address(ip: string, padLeadingZeros: boolean): string
Transform an IPv6 address to a normalized format, with exact 8 segments.
Parameters
- ip: string
  The IPv6 address to be normalized.
- padLeadingZeros: boolean
  Whether to pad leading zeros in each segment, upto 4 digits.
Returns string
The normalized IPv6 address.
Throws
If the input is an invalid IPv6 address.
Example
```
`::     -> 0:0:0:0:0:0:0:0`
```
Example
```
`::1    -> 0:0:0:0:0:0:0:1`
```
Example
```
`a::1   -> a:0:0:0:0:0:0:1`
```
Example
```
`a:b::1 -> a:b:0:0:0:0:0:1`
```
- Defined in NormalizeIPv6Address.ts:34