Adding more attribute to the Minter struct and reformating

internal/utils.go

@@ -14,6 +14,9 @@ type Minter struct {
 	oacounter        int
 	activeCounters   []Counter
 	inactiveCounters []Counter
+	total            int
+	prefix           string
+	mask             string
 }
 
 func (m *Minter) Mint() string {
@@ -27,4 +30,3 @@ func NewMinter() *Minter {
 		inactiveCounters: make([]Counter),
 	}
 }
-