Lib/FileLength-Formatting/MyTypes.types.ps1xml

<?xml version="1.0" encoding="utf-8" ?>
<Types>
  <Type>
    <Name>System.IO.FileInfo</Name>
    <Members>
      <ScriptProperty>
        <!-- Filesize converts length to a human readable format (kb, mb, gb, tb) -->
        <Name>FileSize</Name>
        <GetScriptBlock>

                    Convert-Size -Size $this.length

                </GetScriptBlock>
      </ScriptProperty>
    </Members>
  </Type>
</Types>