If metadata does not contain XMP properties belonging to the Adobe XMP scheme, the method returns null.

If the metadata does not have Adobe PDF XMP properties, and you need to add such properties, create a new instance of the com.accusoft.imagegear.formats.xmp.adobepdf.ImGearAdobePDFXMPMetadata class, assign it using corresponding setter, and then add XMP properties using corresponding properties of the com.accusoft.imagegear.formats.xmp.adobepdf.ImGearAdobePDFXMPMetadata class.

If you need to remove Adobe PDF XMP schema properties from the metadata, set this value to null.