SimpleTagProvider, copy tag definition

I use the SimpleTagProvider to expose some tag.
The list of these tag come from a browse of tags from the default tag provider tree.

I would like to “copy” the tag definition (EngUnit, Documentation,…) of the default tag provider to the created tag in my SimpleTagProvider.

I try to use :
this.gatewayContext.getTagManager().editTags(listTag,tagDiff); to edit the SimpleTagProvider.

Is there a way to get and copy all the properties from one tag (in a provider) to another tag (in another provider) ?