precedenceGridData.horizontalAlignment = GridData.BEGINNING;
precedenceGridData.widthHint = 3 * 12;
precedenceSpinner.setLayoutData( precedenceGridData );
// user classes
userClassesComposite = new ACIItemUserClassesComposite( composite, SWT.NONE );
userClassesComposite.setContext( context );
// grants and denial
grantsAndDenialsComposite = new ACIItemGrantsAndDenialsComposite( composite, SWT.NONE );