function Update-HostsFileEntry {
<#
.SYNOPSIS
    Updates or adds a specific hosts file entry to the hosts file

.LINK
    Get-KnownDeveloperHostsEntries
#>
    [CmdletBinding()]
    param (
        [Parameter(Mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [string]$IpAddress,
        [Parameter(Mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [string]$Hostname,
        [Parameter(Mandatory = $false)]
        [string]$Comment
    )

    $logLead = Get-LogLeadName

    $records = @()
    $existingRecords = Get-HostsFileAllRecords

    $foundPriorRecord = $false
    foreach ($record in $existingRecords) {
        if ($record.Hostname -eq $Hostname) {
            $foundPriorRecord = $true

            $record.IpAddress = $IpAddress
            # Only update the comment if we passed one in. Ignore the previous comment and overwrite (frequently this is for adding jira tickets on changes)
            # We could alternately prepend this comment to the existing comment, with a comma+space separator
            if (![string]::IsNullOrWhiteSpace($Comment)) {
                $record.Comment = $Comment
            }

            $formattedRecord = Format-HostsFileRecord -Record $record

            Write-Host "$logLead : Updating record for $formattedRecord"
        }
        $records += $record
    }

    if (!$foundPriorRecord) {
        $newRecord = New-HostsFileEntry -IpAddress $IpAddress -Hostname $Hostname -Comment $Comment
        $formattedRecord = Format-HostsFileRecord -Record $record

        Write-Host "$logLead : Adding record for $formattedRecord"

        $records += $newRecord
    }

    Save-CompleteHostsFile -Record $records
}