Date returns random date.

Email returns random email address.

Float64 returns random float64 value.

Int32 returns random int32 value.

Int64 returns random int64 value.

Intn returns random value in range [0, n).

String returns random string value.

Stringn returns random string value with specified length.

Uint32 returns random uint32 value.

Uint64 returns random uint64 value.

Uint8 returns random uint8 value.