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
public void setControlType( String controlType ) throws SemanticException
	{
		setStringProperty( ScalarParameter.CONTROL_TYPE_PROP, controlType );
	}
	/**
	 * Returns the alignment for this parameter. Alignments can be one of the
	 * constants defined in <code>DesignChoiceConstants</code>:
	 * 
	 * <ul>
	 * <li><code>SCALAR_PARAM_ALIGN_AUTO</code>
	 * <li><code>SCALAR_PARAM_ALIGN_LEFT</code>
	 * <li><code>SCALAR_PARAM_ALIGN_CENTER</code>
	 * <li><code>SCALAR_PARAM_ALIGN_RIGHT</code>
	 * </ul>
	 * 
	 * @return the alignment for the UI to display the parameter
	 * 
	 * @see org.eclipse.birt.report.model.api.elements.DesignChoiceConstants
	 */
	public String getAlignment( )
	{
		return getStringProperty( ScalarParameter.ALIGNMENT_PROP );
	}
	/**
	 * Sets the alignment for this parameter. Alignments can be one of the
	 * constants defined in <code>DesignChoiceConstants</code>:
	 * 
	 * <ul>
	 * <li><code>SCALAR_PARAM_ALIGN_AUTO</code>
	 * <li><code>SCALAR_PARAM_ALIGN_LEFT</code>