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
* UI to display the value.
	 * 
	 * @return the category for the parameter format
	 */
	public String getCategory( )
	{
		Object value = getProperty( FORMAT_PROP );
		if ( value == null )
			return null;
		assert value instanceof ParameterFormatValue;
		return ( (ParameterFormatValue) value ).getCategory( );
	}
	/**
	 * Sets the format instructions for the parameter value. The format is used
	 * by the UI to display the value.
	 * 
	 * @param format
	 *            the format for the parameter value
	 * @throws SemanticException
	 *             if the property is locked.
	 * @deprecated replaced by setPattern and setCategory.
	 */
	public void setFormat( String format ) throws SemanticException
	{
		setPattern( format );
	}
	/**
	 * Sets the pattern of format instructions for the parameter value. The
	 * format is used by the UI to display the value.
	 *