code: public BugProperty lookupProperty(String name) {
          BugProperty prop = propertyListHead;
  
          while (prop != null) {
              if (prop.getName().equals(name)) {
                  break;
              }
              prop = prop.getNext();
          }
  
          return prop;
      }
docs: Look up a property by name.
  
  @param name
  name of the property to look for
  @return the BugProperty with the given name, or null if the property has
  not been set