Bug 210496 Add hasStyle property in reportItemModel extension point
When chart gets reportItem's properties by extending ReportItem, style properties are null. Hence, model needs to add hasStyle property in reportItemModel extension point
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/ElementDefn.java
checkXmlName( );
		}
		checkPropertyVisibilities( );
		buildSlots( );
		buildTriggerDefnSet( );
		isBuilt = true;
	}
	/**
	 * Checks the validation of the defined property visibilities. If the
	 * property with the name is not defined, then the visibility is illegal.
	 * 
	 * @throws MetaDataException
	 *             if the property definition is not found
	 */
	private void checkPropertyVisibilities( ) throws MetaDataException
	{
		if ( this.propVisibilites == null )
			return;
		Iterator propNames = this.propVisibilites.keySet( ).iterator( );
		while ( propNames.hasNext( ) )
		{
			String propName = (String) propNames.next( );
			
			if ( getProperty( propName ) == null )
				throw new MetaDataException(
						new String[]{name, propName},
						MetaDataException.DESIGN_EXCEPTION_VISIBILITY_PROPERTY_NOT_FOUND );
		}
	}
	/*