<application done='file_write'>
  <instance component='file_read'>
    <property name='filename' value='test.input'/>
    <property name='granularity' value='4'/>
    <property name='messageSize' value='16'/>
  </instance>
  <instance component='bias' connect='file_write'>
    <property name='biasValue' value='0x01020304'/>
  </instance>
  <instance component='file_write'>
    <property name='filename' value='test.outputwrong'/>
  </instance>
  <connection>
    <port instance='file_read' name='out' xferrole='flowcontrol'/>
    <port instance='bias' name='in'/>
  </connection>
</application>

public interface Connection extends Element {
	ElementType TYPE = new ElementType( Connection.class );
	
	// *** Name ***
	@XmlBinding(path = "@name")
	@Label(standard = "Name")
	
	ValueProperty PROP_NAME = new ValueProperty(TYPE, "Name");

	Value<String> getName();
	void setName(String value);
	
	// *** Transport ***
	@XmlBinding( path = "@transport" )
	@Label( standard = "Transport" )
	
	ValueProperty PROP_TRANSPORT = new ValueProperty( TYPE, "Transport" );
	
	Value<String> getProperty();
	void setProperty( String value );
	
	// *** Ports ***
	@Type( base = ConnectionPort.class )
	@XmlListBinding( mappings = { @XmlListBinding.Mapping( element = "port", type = ConnectionPort.class ) } )
	@Label( standard = "Ports" )
				
	ListProperty PROP_PORTS = new ListProperty( TYPE, "Ports" );
				
	ElementList<ConnectionPort> getPorts();
}

public interface ConnectionPort extends Element {
	ElementType TYPE = new ElementType( ConnectionPort.class );
	
	// *** Name ***
	@XmlBinding(path = "@name")
	@Label(standard = "Name")
	@Required 
	
	ValueProperty PROP_NAME = new ValueProperty(TYPE, "Name");

	Value<String> getName();
	void setName(String value);
	
	// *** Instance ***
	@Reference( target = Instance.class )
	@ElementReference(list = "/Instances", key = "Component")
	@XmlBinding(path = "@instance")
	@Label(standard = "Instance")
	@Required
	@MustExist
	
	ValueProperty PROP_INSTANCE = new ValueProperty(TYPE, "Instance");

	ReferenceValue<String, Instance> getInstance();
	void setInstance(String value);
}

<connection-binding>
            <connection-id>ConnectionElementConnection</connection-id>
            <property>Connections</property>
            <endpoint1>
                <property>Ports</property>
                <value>endpoint 1</value>
            </endpoint1>
            <endpoint2>
                <property>Ports</property>
                <value>endpoint2</value>
            </endpoint2>
 </connection-binding>