PS, Get all users, groups and roles for each SSAS database on server

SSASDatabasesAndMembers.ps1

[Reflection.Assembly]::LoadWithPartialName("Microsoft.AnalysisServices")
$ServerName = "YOURSERVERNAME"

$Server = New-Object Microsoft.AnalysisServices.Server
$Server.Connect($ServerName)


$result += $Server.Databases | Select Name, @{Name='Roles'; Expression={$_.Roles.Name}}, @{Name='Members'; Expression={$_.Roles.Members.Name}}

$result | Select * | ConvertTo-Json -Depth 4