If metadata does not contain XMP properties belonging to the IPTC4XMPCore scheme, the method returns null.

If the metadata does not have IPTC4XMPCore XMP properties, and you need to add such properties, create a new instance of the com.accusoft.imagegear.formats.xmp.iptc.ImGearIPTC4XMPCoreMetadata class, pass it to this method, and then add XMP properties using corresponding properties of the com.accusoft.imagegear.formats.xmp.iptc.ImGearIPTC4XMPCoreMetadata class.

If you need to remove IPTC4XMPCore XMP schema properties from the metadata, set this value to null.