create with seed 42, first call : LZORARZVM
create with seed 42, second call: LZORARZVM
a.equals(b)  (whole object graph): true
a.hashCode() == b.hashCode()     : true
create with seed 43              : UETEFLRO
a.equals(c)                      : false
seed 42 set through Keys.SEED    : equals a = true