public/api-v2/project/Invoke-JiraGetProjectIssueSecurityLevels.ps1

#
function Invoke-JiraGetProjectIssueSecurityLevels {
    [CmdletBinding()]
    param (
        # The project Id or Key
        [Parameter(Mandatory,Position=0)]
        [string]
        $ProjectIdOrKey,

        # The JiraContext object to use for the request
        [Parameter()]
        [JiraContext]
        $JiraContext
    )
    process {
        $functionPath = "/rest/api/2/project/$ProjectIdOrKey/securitylevel"
        $verb = "GET"

        $method = New-Object RestMethod @($functionPath,$verb)
        $method.Invoke($JiraContext).levels
    }
}