Gets nuget from nuget.org. Either the latest or a sprecific version

Install-NugetFromNugetOrg.ps1

function Install-NugetFromNugetOrg {
    <#
       .Synopsis
       Gets nuget from nuget.org
       .Description
       Gets nuget from nuget.org. Either the latest or a sprecific version
       .Parameter RequiredVersion
       The version as seen on www.nuget.org
       .Parameter RootFolder
       The root folder where nuget will be copied to
       .Example
       Install-NugetFromNugetOrg -RequiredVersion 'latest' -RootFolder 'c:\nuget'
       .Example
       Install-NugetFromNugetOrg -RequiredVersion '4.7.1' -RootFolder 'c:\nuget'       
    #>  
        [CmdletBinding()]
         param (
                [Parameter(Mandatory=$true)][ValidateNotNullOrEmpty()] 
                [string]  
                $RequiredVersion,
                [Parameter(Mandatory=$true)][ValidateNotNullOrEmpty()] 
                [string] 
                $RootFolder 
                )
                
    if ($RequiredVersion -ne "latest" -and -not ($RequiredVersion.StartsWith('v'))) {
        $RequiredVersion = "v$RequiredVersion"
    }

    $NugetPath = "$RootFolder\$RequiredVersion"
    $NugetFullPath = Join-Path $NugetPath "nuget.exe"
    
    New-Item -ItemType Directory -Path $NugetPath -Force | Out-Null

    $WebRequestURL = "https://dist.nuget.org/win-x86-commandline/$RequiredVersion/nuget.exe"

    if (!(Test-Path $NugetFullPath) -or $RequiredVersion -eq 'latest') {
        Write-Host "Downloading nuget.exe from $WebRequestURL"
        Invoke-WebRequest -Uri $WebRequestURL -OutFile $NugetFullPath -ErrorAction Stop
    }


    if ($RequiredVersion -eq "latest") {
        $LatestVersion = ((Get-Item $NugetFullPath).VersionInfo.FileVersion) -split "\."
        $LatestVersion3Part = "$($LatestVersion[0]).$($LatestVersion[1]).$($LatestVersion[2])"
        $VersionSpecificPath = "$RootFolder\$LatestVersion3Part"

        Write-Host "You asked for the latest version, which is $LatestVersion3Part."

        $VersionSpecificFullPath = Join-Path $VersionSpecificPath "nuget.exe"

        if (Test-Path $VersionSpecificFullPath) {
            Write-Verbose "Found nuget.exe already at $VersionSpecificPath"
        }
        else {
            Write-Verbose "Copying latest version to $VersionSpecificPath"
            New-Item -ItemType Directory -Path $VersionSpecificPath -Force | Out-Null
            Copy-Item $NugetFullPath  $VersionSpecificFullPath
        }

        $NugetFullPath = $VersionSpecificFullPath

    }
    Write-Host "Nuget is at $NugetFullPath - enjoy!"

    return $NugetFullPath

}