Bug 189622 DesignElementHandle.getMethods( ) shouldn't return null value
The return type of DesignElementHandle.getMethods( ) is List; if the design element handle doesn't have script methods, then it return null value. The return value is empty list will be better.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/extension/PeerExtensibilityProvider.java
}
				}
				else if ( parentValue == null
						&& parentProvider.reportItem == null )
				{
					parent = (ExtendedItem) ModelUtil.getParent( parent );
					continue;
				}
				parentValue = parentProvider.reportItem == null
						? null
						: parentProvider.reportItem.serialize( propName );
				if ( parentValue != null )
					break;
				parent = (ExtendedItem) ModelUtil.getParent( parent );
			}
			
			if ( parentValue == null )
				return true;
			else
			{
				if ( childValue.toString( ).equals( parentValue.toString( ) ) )
					continue;
				else
					return true;
			}
		}
		return false;
	}
}