linked subprograms that the work is specifically designed to require,
such as by intimate data communication or control flow between those
subprograms and other parts of the work.

  The Corresponding Source need not include anything that users
can regenerate automatically from other parts of the Corresponding
Source.

  The Corresponding Source for a work in source code form is that
same work.

pkg math/rand, method (*Rand) Perm(int) []int
pkg math/rand, method (*Rand) Seed(int64)
pkg math/rand, method (*Rand) Uint32() uint32
pkg math/rand, method (*Zipf) Uint64() uint64
pkg math/rand, type Rand struct
pkg math/rand, type Source interface { Int63, Seed }
pkg math/rand, type Source interface, Int63() int64
pkg math/rand, type Source interface, Seed(int64)
pkg math/rand, type Zipf struct