drools-eclipse/org.drools.eclipse/src/main/java/org/drools/eclipse/editors/rete/part/VertexEditPart.java
public Object getAdapter(@SuppressWarnings("rawtypes") Class key) {
        if ( key == IPropertySource.class ) {
            return propertySource;
        }
        return super.getAdapter( key );
    }
public Object getAdapter(@SuppressWarnings("rawtypes") Class key) {
        if ( key == IPropertySource.class ) {
            return propertySource;
        }
        return super.getAdapter( key );
    }
/* (non-Javadoc)
@see org.eclipse.gef.editparts.AbstractGraphicalEditPart#getAdapter(java.lang.Class)