Public/New-JiraGroup.ps1

function New-JiraGroup {
    <#
    .SYNOPSIS
       Creates a new group in JIRA
    .DESCRIPTION
       This function creates a new group in JIRA.
    .EXAMPLE
       New-JiraGroup -GroupName testGroup
       This example creates a new JIRA group named testGroup.
    .INPUTS
       This function does not accept pipeline input.
    .OUTPUTS
       [JiraPS.Group] The user object created
    #>

    [CmdletBinding( SupportsShouldProcess )]
    param(
        # Name for the new group.
        [Parameter( Mandatory )]
        [Alias('Name')]
        [String[]]
        $GroupName,

        # Credentials to use to connect to JIRA.
        # If not specified, this function will use anonymous access.
        [PSCredential]
        $Credential
    )

    begin {
        Write-Verbose "[$($MyInvocation.MyCommand.Name)] Function started"

        $server = Get-JiraConfigServer -ErrorAction Stop

        $resourceURi = "$server/rest/api/latest/group"
    }

    process {
        Write-DebugMessage "[$($MyInvocation.MyCommand.Name)] ParameterSetName: $($PsCmdlet.ParameterSetName)"
        Write-DebugMessage "[$($MyInvocation.MyCommand.Name)] PSBoundParameters: $($PSBoundParameters | Out-String)"

        foreach ($_group in $GroupName) {
            Write-Verbose "[$($MyInvocation.MyCommand.Name)] Processing [$_group]"
            Write-Debug "[$($MyInvocation.MyCommand.Name)] Processing `$_group [$_group]"

            $requestBody = @{
                "name" = $_group
            }

            $parameter = @{
                URI        = $resourceURi
                Method     = "POST"
                Body       = ConvertTo-Json -InputObject $requestBody
                Credential = $Credential
            }
            Write-Debug "[$($MyInvocation.MyCommand.Name)] Invoking JiraMethod with `$parameter"
            if ($PSCmdlet.ShouldProcess($GroupName, "Creating group [$GroupName] to JIRA")) {
                $result = Invoke-JiraMethod @parameter

                Write-Output (ConvertTo-JiraGroup -InputObject $result)
            }
        }
    }

    end {
        Write-Verbose "[$($MyInvocation.MyCommand.Name)] Complete"
    }
}