Bug 130492 Provide a method to serialize the report with library information.
Currently, when engine generate the report document file, the document does not contain any library information. That will cause many propblem on server side. Model should provide a method to serialize the report with library information to a stream so that the generated report document can contain all information that the report need.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/DesignElement.java
target.addClient( this, prop.getName( ) );
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.core.IPropertySet#setProperty(org.eclipse.birt.report.model.metadata.PropertyDefn,
	 *      java.lang.Object)
	 */
	public void setProperty( PropertyDefn prop, Object value )
	{
		setProperty( (ElementPropertyDefn) prop, value );
	}
	/**
	 * Clears the local value of the property. See <code>setProperty( )</code>
	 * for details. This is equivalent to calling
	 * <code>setProperty( propName, null )</code>.
	 * <p>
	 * Part of: Property value system.
	 * 
	 * @param propName
	 *            The name of the property to set. Must be valid. Can be a
	 *            system-defined or user-defined property name.
	 */
	public void clearProperty( String propName )
	{
		setProperty( propName, null );
	}
	/**
	 * Returns the definition object for this element.