title: How do I declare a var variable with Roslyn?
body: <p>I've got the following piece of code, but I can't find how to get the var <code>TypeSyntax</code>. 
  Any ideas?</p>
  
  <pre><code>Syntax.LocalDeclarationStatement(                   
      declaration: Syntax.VariableDeclaration(
          type: Syntax.PredefinedType(Syntax.Token(SyntaxKind.VarKeyword)),
          variables: Syntax.SeparatedList(
          Syntax.VariableDeclarator(
              identifier: Syntax.Identifier(name)))
          )
      )
  );
  </code></pre>
  
  <p>this fails with an Argument exception that says: "keyword"</p>