Options for GroupSpec.from. Each field is a usize: a number or a bigint.
usize
number
bigint
Readonly
Members needed to recover the group's share; 0 ≤ memberThreshold ≤ memberCount. A threshold of 0 is accepted, as the reference accepts it, and fails at generation.
0 ≤ memberThreshold ≤ memberCount
Members in the group; 1..=16.
1..=16
Options for GroupSpec.from. Each field is a
usize: anumberor abigint.