Wraps FPDFAnnot_GetObject over the full count. Returns a list of
pdfium_obj handles; each handle's externalptr pins the parent
annotation, so the embedded objects can't dangle past the annot's
lifetime.
Wraps FPDFAnnot_GetObject over the full count. Returns a list of
pdfium_obj handles; each handle's externalptr pins the parent
annotation, so the embedded objects can't dangle past the annot's
lifetime.