How to use Write-EVBEvent cmdlet?

Expected Behavior

I'm attempting to publish a custom event into the new EventBridge service using the Write-EVBEvent cmdlet. However, there's are no examples in the documentation on how this cmdlet is supposed to work and when attempting to publish an event, the results is a FailedEntryCount. There's no details on what exactly failed ...

Current Behavior

$details = [pscustomobject] @{
    VM = "Bar"
    Details = "User Foo powered on Bar"
}

$json = ($details | convertTo-Json).toString()

$payload = New-Object Amazon.EventBridge.Model.PutEventsRequestEntry
$payload.EventBusName = "William"
$payload.Source = "vcenter.producer"
$payload.Detail = $details
$payload.DetailType = "PoweredOnEvent"

Write-EVBEvent -Entry @($payload)

Results:

Entries FailedEntryCount
------- ----------------
{}      1

Possible Solution

Provide a more detailed example in the Get-Help, right now it just repeats the description of what the cmdlt does but not provide any details. It would also be nice to see better output when the operation fails and what actionable task a user can take to debug further

Steps to Reproduce (for bugs)

Run the above snippet with an account to EventBridge and event bus named "William"

Context

Attempting to exercise the new EventBridge feature and publish a custom event from my application to EventBridge

Your Environment

Include as many relevant details about the environment where the bug was discovered.

Affected module: AWSPowerShell
Module version as reported by Get-AWSPowerShellVersion: 4.0.2.0
Operating System and version as reported by $PSVersionTable.OS: Darwin 18.7.0 Darwin Kernel Version 18.7.0: Sun Dec 1 18:59:03 PST 2019; root:xnu-4903.278.19~1/RELEASE_X86_64
PowerShell version as reported by $PSVersionTable.PSEdition: Core

aws / aws-tools-for-powershell

How to use Write-EVBEvent cmdlet? #110