<taglet> allow only one taglet

The <taglet> configuration element in the javadoc plugin allows for only one taglet, or doesn't document how to add more than one taglet.

• I tried to put one than one <taglet> element in the pom.xml file, but the last one seems to override all the previous ones.
• I tried space, coma, : and ; as separator, without success.

It should be possible to add an arbitrary amount of <taglet> elements, and each of them should register a new taglet (through a new occurence of -taglet argument given to the javadoc command line I guess). I tested that multiple occurence of <taglet> works as expected with Ant.