T4 Template for generating a typed C# class of Lazy XAML resources

IconResources.tt

<#@ template debug="false" hostspecific="true" language="C#" #>
<#@ assembly name="System.Core" #>
<#@ assembly name="System.Linq" #>
<#@ assembly name="System.Xml" #>
<#@ assembly name="System.Xml.Linq" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Text" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Xml.Linq" #>
<#@ output extension=".cs" #>

<#
  var type = "StreamGeometry";
  var genericType= type;
  var klass = "Icon";
  var path= $@"XamlResources\Icons.xaml";
  var doc = XDocument.Load(Host.ResolvePath($@".\{path}"));
#>
using System;
using System.CodeDom.Compiler;
using System.Windows;
using System.Windows.Media;

// NOTE: This file is auto-generated from a T4 Template, any changes made to this file will be lost.
namespace App.Resources
{
  [GeneratedCode("T4CodeGenerator", "1.0")]
  public static class <#= klass #>Resources
  {
<#
  var elements = doc.Document.Descendants()
                    .Where(x => x.Name.LocalName == type)
                    .OrderBy(x => x.Name.LocalName); 

  foreach (var element in elements)
  {
    var key = element.Attributes().First(x => x.Name.LocalName == "Key").Value;
    var name = key.Replace("Icon_", "").Replace("_", "");
    var field = $"{name[0].ToString().ToLower()}{name.Substring(1)}";
#>
    private static Lazy<<#= genericType #>> <#= field #> = new Lazy<<#= genericType #>>(() => (<#= genericType #>)Application.Current.FindResource("<#= key #>"));
    /// <summary
    /// Retrieves the cached '<#= key #>' <#= type #> resource from <#= path #>.
    /// </summary>
    public static <#= genericType #> <#= name #> { get => <#= field #>.Value; }

<#
  }
#>
  } 
}