Public/Update-PlexLibrary.ps1

function Update-PlexLibrary
{
    <#
        .SYNOPSIS
            Initiates an update on a library.
        .DESCRIPTION
            Initiates an update on a library.
        .PARAMETER Id
            The Id of the library to update.
        .EXAMPLE
            Update-PlexLibrary -Id 123
    #>


    [CmdletBinding(SupportsShouldProcess)]
    param(
        [Parameter(Mandatory = $true)]
        [String]
        $Id
    )

    #############################################################################
    #Region Import Plex Configuration
    if(!$script:PlexConfigData)
    {
        try
        {
            Import-PlexConfiguration -WhatIf:$False
        }
        catch
        {
            throw $_
        }
    }
    #EndRegion

    #############################################################################
    #Region Make request
    if($PSCmdlet.ShouldProcess("Update library $Id"))
    {
        Write-Verbose -Message "Function: $($MyInvocation.MyCommand): Initiating library update for library Id $Id"
        try
        {
            $Uri = Get-PlexAPIUri -RestEndpoint "library/sections/$Id/refresh"
            Invoke-RestMethod -Uri $Uri -Method GET -ErrorAction Stop
        }
        catch
        {
            throw $_
        }
    }
    #EndRegion
}