Need help with proper Path and LiteralPath resolution

Convert-ExampleFunction.ps1

using namespace System.Collections.Generic

function Convert-ExampleFunction {
    [CmdletBinding(DefaultParameterSetName="Path")]
    param (
        [Parameter(
            Mandatory,
            Position = 0,
            ValueFromPipeline,
            ValueFromPipelineByPropertyName,
            ParameterSetName = "Path",
            HelpMessage="Path to one or more locations."
        )]
        [SupportsWildcards()]
        [ValidateNotNullOrEmpty()]
        [String[]] $Path,

        [Parameter(
            Mandatory,
            Position = 0,
            ValueFromPipelineByPropertyName,
            ParameterSetName = "LiteralPath",
            HelpMessage="Literal path to one or more locations."
        )]
        [ValidateScript({$_ -notmatch '[\?\*]'},
            ErrorMessage = "Wildcard characters *, ? are not acceptable with -LiteralPath")]
        [Alias('PSPath')]
        [ValidateNotNullOrEmpty()]
        [String[]] $LiteralPath
    )

    begin {
        $fileTargets = [List[Object]]::new()
    }

    process {

        # THIS IS WHERE I NEED HELP #################################################
        # Do I use `Get-Item` or `Get-ChildItem`?

        # Resolve either -Path or -LiteralPath
        $resolved = if ($PSBoundParameters['Path']) {
            Get-Item -Path $Path -Force
        } elseif($PSBoundParameters['LiteralPath']) {
            Get-Item -LiteralPath $LiteralPath -Force
        }

        # Perform desired filtering for what gets added to the $fileTargets list.
        $resolved | % {
            $item = $_
            # Code goes here
            $fileTargets.Add($item)
        }
    }

    end {
        # Perform final actions on $fileTargets
        $svgTargets | % {
            $curFile = $_
            # Do stuff here
        }
    }
}