Generate a deterministic seed.
Parse a Base-64 encoded seed, returning a Seed value.
This method requires the exact format produced by toBase64
(i.e. a 44-character string using the web-safe Base-64
alphabet). Other encodings must produce precisely the same
outputs to be supported.
This method will throw an IllegalArgumentException if parsing
Generate a seed directly from four Long values.
Warning: unlike Seed.apply(Long), this method just directly
constructs a seed from the four Long values. Prefer using
Seed(Long) if you aren't sure whether these will be good seed
Generate a random seed.