Bug 119331 Library - name space terminology and behavior
During BIRT 2.0 library feature review meeting the following change was decided. - Change the term namespace to 'prefix' - By default use the library name as the prefix ( namespace ); the dialog to input prefix should be prompted only if hte auto generated prefix is not unique.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dnd/InsertInLayoutUtil.java
handle = ( (ListBandProxy) target ).getElemtHandle( );
			}
			if ( handle instanceof GroupHandle )
			{
				return (GroupHandle) handle;
			}
			return null;
		}
		protected ReportItemHandle getGroupContainer( Object target )
		{
			GroupHandle group = getGroupHandle( target );
			if ( group != null
					&& group.getContainer( ) instanceof ReportItemHandle )
				return (ReportItemHandle) group.getContainer( );
			return null;
		}
	}
	/**
	 * Creates a object to insert.
	 * 
	 * @param insertObj
	 *            object insert to layout
	 * @param target
	 *            insert target, like cell or ListBandProxy
	 * @param targetParent
	 *            insert target's non-dummy container, like table or list
	 * @return new object in layout
	 * @throws SemanticException
	 */
	public static DesignElementHandle performInsert( Object insertObj,