/**
* Adds the given ElementDecl to this ContentModelGroup
*
* @param elementDecl the ElementDecl to add
* @exception SchemaException when an ElementDecl already exists with the same name as the given
* ElementDecl
*/
public void addElementDecl(ElementDecl elementDecl) throws SchemaException {
_contentModel.addElementDecl(elementDecl);
// --set the parent
elementDecl.setParent(this);
} // -- addElementDecl
