Bug 141709 The Interface "IScalarParameterModel" should provide a "TEXT_ID_PROP" member.
In order to provide the "Localization" function in Property Editor of Parameter, it requires to implement a "ScalarParameterI18nPage" Class similar to the Class of "LabelI18nPage", and it consequently needs to "IScalarParameterModel" provide a "TEXT_ID_PROP" member for "ScalarParameterHandle" Class.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ScalarParameterHandle.java
* <li><code>SCALAR_PARAM_ALIGN_CENTER</code>
	 * <li><code>SCALAR_PARAM_ALIGN_RIGHT</code>
	 * </ul>
	 * 
	 * @param align
	 *            the alignment for the UI to display the parameter
	 * 
	 * @throws SemanticException
	 *             if the input type is not one of above choices.
	 * @see org.eclipse.birt.report.model.api.elements.DesignChoiceConstants
	 */
	public void setAlignment( String align ) throws SemanticException
	{
		setStringProperty( ScalarParameter.ALIGNMENT_PROP, align );
	}
	/**
	 * Tests whether the value must match one of values in the selection list.
	 * 
	 * 
	 * @return <code>true</code> if the value must match one of values in the
	 *         list, otherwise <code>false</code>.
	 */
	public boolean isMustMatch( )
	{
		return getBooleanProperty( ScalarParameter.MUCH_MATCH_PROP );
	}
	/**
	 * Sets the flag indicates that whether the value must match one of values
	 * in the selection list.
	 *