Returns true if the given PDF object's serialized form starts with a
non-delimiter character, meaning it requires whitespace separation from
a preceding token to avoid ambiguous parsing.
Self-delimiting types (PdfString, PdfHexadecimal, PdfArray, PdfDictionary)
start with (, <, [, or << and do not need a leading space.
Returns true if the given PDF object's serialized form starts with a non-delimiter character, meaning it requires whitespace separation from a preceding token to avoid ambiguous parsing.
Self-delimiting types (PdfString, PdfHexadecimal, PdfArray, PdfDictionary) start with
(,<,[, or<<and do not need a leading space.