Bug 80429 [Preferences] [Dialogs] FieldEditors should relax requirements to support DialogPages
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/IDEPerspectivesPreferencePage.java
private final String PROJECT_SWITCH_PERSP_MODE_TITLE = IDEWorkbenchMessages
            .getString("ProjectSwitchPerspectiveMode.optionsTitle"); 
    private final String PSPM_ALWAYS_TEXT = IDEWorkbenchMessages
            .getString("ProjectSwitchPerspectiveMode.always"); 
    private final String PSPM_NEVER_TEXT = IDEWorkbenchMessages
            .getString("ProjectSwitchPerspectiveMode.never"); 
    private final String PSPM_PROMPT_TEXT = IDEWorkbenchMessages
            .getString("ProjectSwitchPerspectiveMode.prompt"); 
    private RadioGroupFieldEditor projectSwitchField;
    /**