src/Solutions/Get-XrmSolution.ps1

<#
    .SYNOPSIS
    Retrieve solution record
#>

function Get-XrmSolution {
    [CmdletBinding()]
    param
    (        
        [Parameter(Mandatory = $false, ValueFromPipeline)]
        [Microsoft.Xrm.Tooling.Connector.CrmServiceClient]
        $XrmClient = $Global:XrmClient,

        [Parameter(Mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [String]
        $SolutionUniqueName,

        [Parameter(Mandatory = $false)]
        [ValidateNotNullOrEmpty()]
        [String[]]
        $Columns = @("solutionid", "uniquename", "friendlyname", "version", "ismanaged", "installedon", "createdby", "publisherid", "modifiedon", "modifiedby")
    )
    begin {   
        $StopWatch = [System.Diagnostics.Stopwatch]::StartNew(); 
        Trace-XrmFunction -Name $MyInvocation.MyCommand.Name -Stage Start -Parameters ($MyInvocation.MyCommand.Parameters); 
    }    
    process {

        $solution = Get-XrmRecord -LogicalName "solution" -AttributeName "uniquename" -Value $SolutionUniqueName -Columns $Columns;
        $solution;

    }
    end {
        $StopWatch.Stop();
        Trace-XrmFunction -Name $MyInvocation.MyCommand.Name -Stage Stop -StopWatch $StopWatch;
    }    
}

Export-ModuleMember -Function Get-XrmSolution -Alias *;

Register-ArgumentCompleter -CommandName Get-XrmSolution -ParameterName "SolutionUniqueName" -ScriptBlock {

    param($CommandName, $ParameterName, $WordToComplete, $CommandAst, $FakeBoundParameters)

    $solutionUniqueNames = @();
    $solutions = Get-XrmSolutions -Columns "uniquename";
    $solutions | ForEach-Object { $solutionUniqueNames += $_.uniquename };
    return $solutionUniqueNames | Where-Object { $_ -like "$wordToComplete*" } | Sort-Object;
}