func (k Keeper) DeductMintTokenFee(ctx sdk.Context, owner sdk.AccAddress, symbol string) error {
	fee, err := k.GetTokenMintFee(ctx, symbol)
	if err != nil {
		return err
	}
	return feeHandler(ctx, k, owner, fee)
}
DeductMintTokenFee performs fee handling for minting token
package keeper
import (
	"math"
	"strconv"
	sdk "github.com/cosmos/cosmos-sdk/types"
	"github.com/irisnet/irismod/modules/token/types"
)
const (
	FeeFactorBase = 3
	FeeFactorExp  = 4
)
func (k Keeper) DeductIssueTokenFee(ctx sdk.Context, owner sdk.AccAddress, symbol string) error {
	fee, err := k.GetTokenIssueFee(ctx, symbol)
	if err != nil {
		return err
	}
	return feeHandler(ctx, k, owner, fee)
}