'宣言 Public Overloads Function DescendantsAndSelf( _ Optional ByVal descendIntoChildrenFilter As Func(Of SyntaxNode,Boolean), _ Optional ByVal descendIntoIgnoredContent As Boolean _ ) As IEnumerable(Of SyntaxNode)
public IEnumerable<SyntaxNode> DescendantsAndSelf( Func<SyntaxNode,bool> descendIntoChildrenFilter, bool descendIntoIgnoredContent )