code: public boolean containsValue(Object value) {
  		for (GenericEntry e : values) {
  			if (e.equals(value))
  				return true;
  		}
  		return false;
  	}
docs: Returns true if this map maps one or more keys to the specified value.
  More formally, returns true if and only if this map contains at least one
  mapping to a value v such that (value==null ? v==null : value.equals(v)).
  This operation will probably require time linear in the map size for most
  implementations of the Map interface.
  
  @param value
  @return true if this map maps one or more keys to the specified value.