public/api-v2/project-category/Invoke-JiraGetAllProjectCategories.ps1

#https://developer.atlassian.com/cloud/jira/platform/rest/v2/#api-rest-api-2-projectCategory-get
function Invoke-JiraGetAllProjectCategories {
    [CmdletBinding()]
    param (
        # The JiraContext object to use for the request
        [Parameter()]
        [object]
        $JiraContext
    )
    process {
        $functionPath = "/rest/api/2/projectCategory"
        $verb = "GET"

        $method = New-PACRestMethod $functionPath $verb
        $method.Invoke($JiraContext)
    }
}