PowerShell hack to ignore ssl certificates when using Invoke-WebRequest

Invoke-WebRequest_Ignore_SSL.ps1

add-type @"
    using System.Net;
    using System.Security.Cryptography.X509Certificates;
    public class TrustAllCertsPolicy : ICertificatePolicy {
        public bool CheckValidationResult(
            ServicePoint srvPoint, X509Certificate certificate,
            WebRequest request, int certificateProblem) {
            return true;
        }
    }
"@
[System.Net.ServicePointManager]::CertificatePolicy = New-Object TrustAllCertsPolicy

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Ssl3, [Net.SecurityProtocolType]::Tls, [Net.SecurityProtocolType]::Tls11, [Net.SecurityProtocolType]::Tls12
$Header = @{"api-token"="1234567890"}
$Request = Invoke-WebRequest -Uri "https://api.example.com" -Headers $Header -Method Get -ContentType "Application/Json"

[System.Net.ServicePointManager]::ServerCertificateValidationCallback = { $true } works on Windows + PS 5.1