1pub const TYPENODEEMPTY: u8 = 0;
2pub const TYPENODENORMAL: u8 = 1;
3pub const TYPENODEFINAL: u8 = 2;
4pub const TYPENODEVALUE: u8 = 3;
5pub const TYPENODEROOT: u8 = 4;
6pub const EMPTYNODEVALUE: [u8; 32] = [0; 32];