Bug 293787 Markers view not filtering by workingsets
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerContentGenerator.java
/**
	 * Return whether or not all of {@link MarkerTypesModel} arein the
	 * selectedTypes.
	 * 
	 * @param selectedTypes
	 * @return boolean
	 */
	boolean allTypesSelected(Collection selectedTypes) {
		return generatorDescriptor.allTypesSelected(selectedTypes);
	}
	/**
	 * Get the all of the fields that this content generator is using.
	 * 
	 * @return {@link MarkerField}[]
	 */
	MarkerField[] getAllFields() {
		return generatorDescriptor.getAllFields();
	}
	/**
	 * Get the fields that this content generator is displaying.
	 * 
	 * @return {@link MarkerField}[]
	 */
	MarkerField[] getVisibleFields() {
		return visibleFields;
	}
	/**
	 * Set the visible fields.
	 * 
	 * @param visible