public/api-v2/version/Invoke-JiraGetVersion.ps1

$JiraVersionExpand = @("operations","issuestatus")

#https://developer.atlassian.com/cloud/jira/platform/rest/v2/#api-rest-api-2-version-id-GET
function Invoke-JiraGetVersion {
    [CmdletBinding()]
    param (
        # The ID of the version to update
        [Parameter(Mandatory,Position=0)]
        [int32]
        $VersionId,

        # Used to expand additional attributes
        [Parameter(Position=1)]
        [ValidateScript({ Compare-StringArraySubset $JiraVersionExpand $_ })]
        [string[]]
        $Expand,

        # The JiraConnection object to use for the request
        [Parameter(Position=2)]
        [hashtable]
        $JiraConnection
    )
    process {
        $functionPath = "/rest/api/2/version/$VersionId"
        $verb = "GET"
        
        $query = @{}
        if($PSBoundParameters.ContainsKey("Expand")){$query.Add("expand",$Expand -join ",")}
        
        Invoke-JiraRestMethod $JiraConnection $functionPath $verb -Query $query
    }
}