public static Class<? extends Predicate> getPredicateClass(String name) {
    return (name == null) ? null : NAME_TO_CLASS.get(name);
  }
Return a {@link Predicate} implementation class give its name

@param name the name of a {@link Predicate} implementation
@return a {@link Predicate} implementation class give its name or <code>null</code> is not found
ambari-server/src/main/java/org/apache/ambari/server/collections/functors/PredicateClassFactory.java