Composite composite = new Composite(parent, SWT.NONE);
composite.setLayout(new GridLayout());
composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
spacesPart = new CloudSpacesSelectionPart(spacesDelegate, cloudServer, wizardHandle);
// Register the validation handler into the spaces selection part so
// that validation can
// be performed when cloud space selection changes.
spacesPart.addPartChangeListener(validationEventHandler);