NetboxPS/Functions/Setup/Set-NetboxCredential.ps1

function Set-NetboxCredential {
    [CmdletBinding(DefaultParameterSetName = 'CredsObject',
        ConfirmImpact = 'Low',
        SupportsShouldProcess = $true)]
    [OutputType([pscredential])]
    param
    (
        [Parameter(ParameterSetName = 'CredsObject',
            Mandatory = $true)]
        [pscredential]$Credential,

        [Parameter(ParameterSetName = 'UserPass',
            Mandatory = $true)]
        [securestring]$Token
    )

    if ($PSCmdlet.ShouldProcess('Netbox Credentials', 'Set')) {
        switch ($PsCmdlet.ParameterSetName) {
            'CredsObject' {
                $script:NetboxConfig.Credential = $Credential
                break
            }

            'UserPass' {
                $script:NetboxConfig.Credential = [System.Management.Automation.PSCredential]::new('notapplicable', $Token)
                break
            }
        }

        $script:NetboxConfig.Credential
    }
}