[
	Match ("[0]Modifiers Whitespaces 'class' Whitespaces [1]Identifier { [2]Block ('class') }"),
	Parents (CompilationUnit, Namespace, Class)
]
public class Class : Something
{
	public Class (Modifiers modifiers, Identifier identifier, Block block)
	{ ... }
}

[
	Match ("'namespace' Whitespaces [0]Qualident {  [1]Block ('namespace') }",
	Parents (CompilationUnit)
]
public class Namespace
{
	public Namespace (Qualident qualident, Block block)
	{ ... }
}

[	Match ("'using' Whitespaces [0]Qualident Whitespaces ';'"),
	Match ("'using' Whitespaces [0]Identifier Whitespaces '=' Whitespaces [1]Qualident Whitespaces ';'"),
	Parents (CompilationUnit)
]
public class Using
{
	public Using (Qualident qualident)
	{ ... }

	public Using (Identifier identifier, Qualident qualident)
	{ ... }
}