A \c CXComment_Paragraph node is considered whitespace if it contains only \c CXComment_Text nodes that are empty or whitespace.
Other AST nodes (except \c CXComment_Paragraph and \c CXComment_Text) are never considered whitespace.
\returns non-zero if \c Comment is whitespace.
See Implementation
A \c CXComment_Paragraph node is considered whitespace if it contains only \c CXComment_Text nodes that are empty or whitespace.
Other AST nodes (except \c CXComment_Paragraph and \c CXComment_Text) are never considered whitespace.
\returns non-zero if \c Comment is whitespace.