Bug 176986 [Markers] Move tasks into the problems view
We should consider moving the tasks into the problem view as currently no one is using them in the tasks view. The main issue this could create is performance - problems change rapidly but tasks are generally pretty static and it may be a fair amount of extra time spent sorting them.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerSupportRegistry.java
*/
	public MarkerGroup getMarkerGroup(String categoryName) {
		if (markerGroups.containsKey(categoryName))
			return (MarkerGroup) markerGroups.get(categoryName);
		return null;
	}
	/**
	 * Return the field that maps to id.
	 * 
	 * @param id
	 * @return {@link MarkerField} or <code>null</code>
	 */
	public MarkerField getField(String id) {
		if (fields.containsKey(id))
			return (MarkerField) fields.get(id);
		return null;
	}
	/**
	 * Return an array of MarkerContentGenerator for the receiver.
	 * 
	 * @return MarkerContentGenerator[]
	 */
	public MarkerContentGenerator[] getGenerators() {
		MarkerContentGenerator[] generatorArray = new MarkerContentGenerator[generators
				.size()];
		generators.values().toArray(generatorArray);
		return generatorArray;
	}
}