I ended up adding one for a Lazy Property:
="1.0"="utf-8"
<CodeSnippets xmlns="http://schemas.microsoft.com/VisualStudio/2005/CodeSnippet">
<CodeSnippet Format="1.0.0">
<Header>
<Title>propLazy</Title>
<Shortcut>proplazy</Shortcut>
<Description>Code snippet for property and lazy backing field</Description>
<Author>ME</Author>
<SnippetTypes>
<SnippetType>Expansion</SnippetType>
</SnippetTypes>
</Header>
<Snippet>
<Declarations>
<Literal>
<ID>type</ID>
<ToolTip>Property type</ToolTip>
<Default>string</Default>
</Literal>
<Literal>
<ID>property</ID>
<ToolTip>Property name</ToolTip>
<Default>MyProperty</Default>
</Literal>
</Declarations>
<Code Language="csharp">
<![CDATA[
</Code>
</Snippet>
</CodeSnippet>
</CodeSnippets>
which produces:
private System.Lazy<string> _MyProperty = new System.Lazy<string>();
public string MyProperty { get { return _MyProperty.Value; } set { _MyProperty = new Lazy<string>(() => value); } }