Extend Get-Content to include a -Fast parameter; much less flexible but much more performant

Get-Content.ps1

<#
.Synopsis
        Extend Get-Content to include a -Fast parameter; much less flexible but more performant
.Example
  	PS> (Measure-Command { Get-Content .\data.xml} ).TotalMilliseconds
    1609.3267

    PS> (Measure-Command { Get-Content .\data.xml -Fast} ).TotalMilliseconds
    39.2511
#>
function Get-Content {
    [CmdletBinding(DefaultParameterSetName='Path', SupportsTransactions=$true, HelpUri='http://go.microsoft.com/fwlink/?LinkID=113310')]
    param(
        [Parameter(ValueFromPipelineByPropertyName=$true)]
        [long]
        ${ReadCount},

        [Parameter(ValueFromPipelineByPropertyName=$true)]
        [Alias('First','Head')]
        [long]
        ${TotalCount},

        [Parameter(ValueFromPipelineByPropertyName=$true)]
        [Alias('Last')]
        [int]
        ${Tail},

        [Parameter(ParameterSetName='Path', Mandatory=$true, Position=0, ValueFromPipelineByPropertyName=$true)]
        [string[]]
        ${Path},

        [Parameter(ParameterSetName='LiteralPath', Mandatory=$true, ValueFromPipelineByPropertyName=$true)]
        [Alias('PSPath')]
        [string[]]
        ${LiteralPath},

        [string]
        ${Filter},

        [string[]]
        ${Include},

        [string[]]
        ${Exclude},

        [switch]
        ${Force},

        [Parameter(ValueFromPipelineByPropertyName=$true)]
        [pscredential]
        ${Credential},

        [switch]
        ${Fast}
    
        )

    begin
    {
        try {
            $outBuffer = $null
            if ($PSBoundParameters.TryGetValue('OutBuffer', [ref]$outBuffer))
            {
                $PSBoundParameters['OutBuffer'] = 1
            }
            $wrappedCmd = $ExecutionContext.InvokeCommand.GetCommand('Get-Content', [System.Management.Automation.CommandTypes]::Cmdlet)

            if($PSBoundParameters['Fast']) 
            { 
                $scriptCmd = {& Invoke-Command { [System.IO.File]::ReadAllText($PSBoundParameters['Path']) } }
            }
            else 
            {
                $scriptCmd = {& $wrappedCmd @PSBoundParameters }
            }

            $steppablePipeline = $scriptCmd.GetSteppablePipeline($myInvocation.CommandOrigin)
            $steppablePipeline.Begin($PSCmdlet)
        } catch {
            throw
        }
    }

    process
    {
        try {
            $steppablePipeline.Process($_)
        } catch {
            throw
        }
    }

    end
    {
        try {
            $steppablePipeline.End()
        } catch {
            throw
        }
    }
    <#

    .ForwardHelpTargetName Get-Content
    .ForwardHelpCategory Cmdlet

    #>
}