code: public static ClassInjector create(String prefix, ClassLoader parent) {
          return create(prefix, parent, false);
      }
docs: Create a ClassInjector for defining one class. The prefix is optional,
  which is used as the start of the auto-generated class name. If the
  parent ClassLoader is not specified, it will default to the ClassLoader of
  the ClassInjector class.
  <p>
  If the parent loader was used for loading injected classes, the new
  class will be loaded by it. This allows auto-generated classes access to
  package accessible members, as long as they are defined in the same
  package.
  
  @param prefix optional class name prefix
  @param parent optional parent ClassLoader