Function Tag.toSDLString
Output this entire tag in SDL format. Does not treat this as
a root tag. If you intend this to be the root of a standard SDL
document, use toSDLDocument instead.
Prototypes
string toSDLString()(
string indent = "\x09",
int indentLevel = 0
);
void toSDLString(Sink)(
ref Sink sink,
string indent = "\x09",
int indentLevel = 0
)
if (isOutputRange!(Sink, char));