title: Display element's attribute using PowerShell's Format-Table
body: <p>Assuming Atom feed's XML:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8" standalone="yes"?&gt;
  &lt;feed ... &gt;
    &lt;title type="text"&gt;Attachments&lt;/title&gt;
    &lt;id&gt;http://server/list/_vti_bin/listdata.svc/list(1234)/Attachments/&lt;/id&gt;
    &lt;updated&gt;2015-05-12T13:00:05Z&lt;/updated&gt;
    &lt;link rel="self" title="Attachments" href="Attachments" /&gt;
    &lt;entry&gt;
      &lt;id&gt;...&lt;/id&gt;
      &lt;title type="text"&gt;spreadsheet.xlsx&lt;/title&gt;
      &lt;updated&gt;2015-05-12T13:00:05Z&lt;/updated&gt;
      &lt;author&gt;
        &lt;name /&gt;
      &lt;/author&gt;
      &lt;link ... /&gt;
      &lt;link ... /&gt;
      &lt;category term="Microsoft.SharePoint.DataService.AttachmentsItem" scheme="http://schemas.microsoft.com/ado/2007/08/dataservices/scheme" /&gt;
      &lt;content type="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" src="http://server/list/Attachments/1234/spreadsheet.xlsx" /&gt;
      &lt;m:properties xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices"&gt;
        &lt;d:EntitySet&gt;TheList&lt;/d:EntitySet&gt;
        &lt;d:ItemId m:type="Edm.Int32"&gt;1234&lt;/d:ItemId&gt;
        &lt;d:Name&gt;spreadsheet.xlsx&lt;/d:Name&gt;
      &lt;/m:properties&gt;
    &lt;/entry&gt;
  </code></pre>
  
  <p>Unfortunately, <code>$_.Content.'#type'</code> and <code>$_.Content.'#src'</code> don't identify the attributes:</p>
  
  <pre><code>$webRequest = Invoke-WebRequest -Uri $url -Method Get -UseDefaultCredentials
  [xml]$xml = $webRequest.Content
  
  $properties = $xml.feed.entry
  $properties | Format-Table -Property `
    @{Label="Title"; Expression={$_.Title.'#text'}; Width=50},
    @{Label="Url"; Expression={$_.Content.'#src'}; Width=20},
    @{Label="ContentType"; Expression={$_.Content.'#type'}; Width=12}
  </code></pre>
  
  <p>What is the correct syntax to get the content associated with the <code>content.type</code> and <code>content.src</code> attributes?</p>