code: public DynamicType.Builder<?> rebase(Package aPackage, ClassFileLocator classFileLocator) {
          return rebase(new PackageDescription.ForLoadedPackage(aPackage), classFileLocator);
      }
docs: Rebases a package. This offers an opportunity to add annotations to the package definition. Packages are defined
  by classes named {@code package-info} without any methods or fields but permit annotations. Any field or method
  definition will cause an {@link IllegalStateException} to be thrown when the type is created.
  
  @param aPackage         The package that is being rebased.
  @param classFileLocator The class file locator to use for locating the package's class file.
  @return A type builder for rebasing the given package.