title: How to retrieve the employeeid attribute
body: <p>How to retrieve the <code>employeeid</code> attribute? I do not get any output when I execute:</p>
  
  <pre><code>Get-AzureADUser -ObjectId "Andre@contoso.com" | Select-Object -ExpandProperty ExtensionProperty
  
  Key                         Value
  ---                         -----
  odata.metadata              https://graph.windows.net/xxxxxxxxxxx-xxxx-xxxxxxxxxxxx/$metadata#directoryObjects/Mic...
  odata.type                  Microsoft.DirectoryServices.User
  employeeId                  118880
  onPremisesDistinguishedName
  userIdentities              []
  </code></pre>
  
  <p>I do not know how to retrieve it with AzureAD PowerShell.</p>
  
  <pre><code>Get-AzureADUser -ObjectId "Andre@contoso.com" | Select-Object employeeId
  
  employeeId
  ----------
  </code></pre>
  
  <p>Last update:</p>
  
  <pre><code>$_default_log = $env:userprofile + '\Documents\azuread_enabled_accounts.csv'
  Get-AzureADUser -All $true -Filter 'accountEnabled eq true' |
      select DisplayName, UserPrincipalName, Mail, Department, UserType,
          CreationType, RefreshTokensValidFromDateTime, AccountEnabled,
          @{name='Licensed';expression={if($_.AssignedLicenses){$TRUE}else{$False}}},
          @{name='Plan';expression={if($_.AssignedPlans){$TRUE}else{$False}}},ObjectId |
      Export-Csv $_default_log -NoTypeInformation -Encoding UTF8
  </code></pre>