export default class S0 {
  static S0 = Buffer.from([0x03]);

  static create() {
    const s0 = new S0();
    s0._buf = S0;

    return s0;
  }

  static fromBuffer(buf) {
    const s0 = new S0();
    s0._buf = buf;

    return s0;
  }

  encode() {
    return this._buf;
  }

  validate() {
    if (Buffer.compare(S0, this._buf) !== 0) {
      return false;
    }

    return true;
  }
}

@@ -28,18 +28,20 @@
  static 
-S0
+DATA
  = Buffe
@@ -313,16 +313,21 @@
 mpare(S0
+.DATA
 , this._

fix S0 static buffer usage