drools-eclipse/org.drools.eclipse/src/main/java/org/drools/eclipse/editors/rete/model/GraphicalVertex.java
public Object getPropertyValue(Object propertyId) {
        if ( XPOS_PROP.equals( propertyId ) ) {
            return Integer.toString( location.x );
        }
        if ( YPOS_PROP.equals( propertyId ) ) {
            return Integer.toString( location.y );
        }
        if ( HEIGHT_PROP.equals( propertyId ) ) {
            return Integer.toString( size.height );
        }
        if ( WIDTH_PROP.equals( propertyId ) ) {
            return Integer.toString( size.width );
        }
        return null;
    }
public Object getPropertyValue(Object propertyId) {
        if ( XPOS_PROP.equals( propertyId ) ) {
            return Integer.toString( location.x );
        }
        if ( YPOS_PROP.equals( propertyId ) ) {
            return Integer.toString( location.y );
        }
        if ( HEIGHT_PROP.equals( propertyId ) ) {
            return Integer.toString( size.height );
        }
        if ( WIDTH_PROP.equals( propertyId ) ) {
            return Integer.toString( size.width );
        }
        return null;
    }
Return the property value for the given propertyId, or null.