code: public static <T extends Annotation> void trim(Collection<T> annotations) {
  		for (final T anno : annotations) {
  			trim(anno, ' ', '\n', '\t', '\r', '\f');
  		}
  	}
docs: trims an entire collection of annotations. Beware: directly trimming the
  result of {@link JCasUtil#select(org.apache.uima.jcas.JCas, Class)}
  throws a {@link ConcurrentModificationException}.
  
  @param annotations
  The annotations you want to trim
  @param <T>
  the annotation type
  @since 0.4.1