Implementations of this class are encouraged to define a toString() method that helps identifying the package and its enclosing classpath entry for debugging purposes.
Lists all the files containing class information in this package (but not nested packages).
Lists all the files containing class information in this package (but not nested packages).
Class information is found in .class files and .tasty files. For any binary name X, if there is both an X.class and an X.tasty, they must be returned as part of the same ClassData.