func (j *VestingBalanceCreateOperation) UnmarshalJSONFFLexer(fs *fflib.FFLexer, state fflib.FFParseState) error {
	var err error
	currentKey := ffjtVestingBalanceCreateOperationbase
	_ = currentKey
	tok := fflib.FFTok_init
	wantedTok := fflib.FFTok_init
mainparse:
	for {
		tok = fs.Scan()
		if tok == fflib.FFTok_error {
			goto tokerror
		}
		switch state {
		case fflib.FFParse_map_start:
			if tok != fflib.FFTok_left_bracket {
				wantedTok = fflib.FFTok_left_bracket
				goto wrongtokenerror
			}
			state = fflib.FFParse_want_key
			continue
		case fflib.FFParse_after_value:
			if tok == fflib.FFTok_comma {
				state = fflib.FFParse_want_key
			} else if tok == fflib.FFTok_right_bracket {
				goto done
			} else {
				wantedTok = fflib.FFTok_comma
				goto wrongtokenerror
			}
		case fflib.FFParse_want_key:
			if tok == fflib.FFTok_right_bracket {
				goto done
			}
			if tok != fflib.FFTok_string {
				wantedTok = fflib.FFTok_string
				goto wrongtokenerror
			}
			kn := fs.Output.Bytes()
			if len(kn) <= 0 {
				currentKey = ffjtVestingBalanceCreateOperationnosuchkey
				state = fflib.FFParse_want_colon
				goto mainparse
			} else {
				switch kn[0] {
				case 'a':
					if bytes.Equal(ffjKeyVestingBalanceCreateOperationAmount, kn) {
						currentKey = ffjtVestingBalanceCreateOperationAmount
						state = fflib.FFParse_want_colon
						goto mainparse
					}
				case 'c':
					if bytes.Equal(ffjKeyVestingBalanceCreateOperationCreator, kn) {
						currentKey = ffjtVestingBalanceCreateOperationCreator
						state = fflib.FFParse_want_colon
						goto mainparse
					}
				case 'f':
					if bytes.Equal(ffjKeyVestingBalanceCreateOperationFee, kn) {
						currentKey = ffjtVestingBalanceCreateOperationFee
						state = fflib.FFParse_want_colon
						goto mainparse
					}
				case 'o':
					if bytes.Equal(ffjKeyVestingBalanceCreateOperationOwner, kn) {
						currentKey = ffjtVestingBalanceCreateOperationOwner
						state = fflib.FFParse_want_colon
						goto mainparse
					}
				case 'p':
					if bytes.Equal(ffjKeyVestingBalanceCreateOperationPolicy, kn) {
						currentKey = ffjtVestingBalanceCreateOperationPolicy
						state = fflib.FFParse_want_colon
						goto mainparse
					}
				}
				if fflib.SimpleLetterEqualFold(ffjKeyVestingBalanceCreateOperationFee, kn) {
					currentKey = ffjtVestingBalanceCreateOperationFee
					state = fflib.FFParse_want_colon
					goto mainparse
				}
				if fflib.SimpleLetterEqualFold(ffjKeyVestingBalanceCreateOperationPolicy, kn) {
					currentKey = ffjtVestingBalanceCreateOperationPolicy
					state = fflib.FFParse_want_colon
					goto mainparse
				}
				if fflib.SimpleLetterEqualFold(ffjKeyVestingBalanceCreateOperationOwner, kn) {
					currentKey = ffjtVestingBalanceCreateOperationOwner
					state = fflib.FFParse_want_colon
					goto mainparse
				}
				if fflib.SimpleLetterEqualFold(ffjKeyVestingBalanceCreateOperationCreator, kn) {
					currentKey = ffjtVestingBalanceCreateOperationCreator
					state = fflib.FFParse_want_colon
					goto mainparse
				}
				if fflib.SimpleLetterEqualFold(ffjKeyVestingBalanceCreateOperationAmount, kn) {
					currentKey = ffjtVestingBalanceCreateOperationAmount
					state = fflib.FFParse_want_colon
					goto mainparse
				}
				currentKey = ffjtVestingBalanceCreateOperationnosuchkey
				state = fflib.FFParse_want_colon
				goto mainparse
			}
		case fflib.FFParse_want_colon:
			if tok != fflib.FFTok_colon {
				wantedTok = fflib.FFTok_colon
				goto wrongtokenerror
			}
			state = fflib.FFParse_want_value
			continue
		case fflib.FFParse_want_value:
			if tok == fflib.FFTok_left_brace || tok == fflib.FFTok_left_bracket || tok == fflib.FFTok_integer || tok == fflib.FFTok_double || tok == fflib.FFTok_string || tok == fflib.FFTok_bool || tok == fflib.FFTok_null {
				switch currentKey {
				case ffjtVestingBalanceCreateOperationAmount:
					goto handle_Amount
				case ffjtVestingBalanceCreateOperationCreator:
					goto handle_Creator
				case ffjtVestingBalanceCreateOperationOwner:
					goto handle_Owner
				case ffjtVestingBalanceCreateOperationPolicy:
					goto handle_Policy
				case ffjtVestingBalanceCreateOperationFee:
					goto handle_Fee
				case ffjtVestingBalanceCreateOperationnosuchkey:
					err = fs.SkipField(tok)
					if err != nil {
						return fs.WrapErr(err)
					}
					state = fflib.FFParse_after_value
					goto mainparse
				}
			} else {
				goto wantedvalue
			}
		}
	}
handle_Amount:
	{
		tbuf, err := fs.CaptureField(tok)
		if err != nil {
			return fs.WrapErr(err)
		}
		err = json.Unmarshal(tbuf, &j.Amount)
		if err != nil {
			return fs.WrapErr(err)
		}
	}
	state = fflib.FFParse_after_value
	goto mainparse
handle_Creator:
	{
		if tok == fflib.FFTok_null {
		} else {
			tbuf, err := fs.CaptureField(tok)
			if err != nil {
				return fs.WrapErr(err)
			}
			err = j.Creator.UnmarshalJSON(tbuf)
			if err != nil {
				return fs.WrapErr(err)
			}
		}
		state = fflib.FFParse_after_value
	}
	state = fflib.FFParse_after_value
	goto mainparse
handle_Owner:
	{
		if tok == fflib.FFTok_null {
		} else {
			tbuf, err := fs.CaptureField(tok)
			if err != nil {
				return fs.WrapErr(err)
			}
			err = j.Owner.UnmarshalJSON(tbuf)
			if err != nil {
				return fs.WrapErr(err)
			}
		}
		state = fflib.FFParse_after_value
	}
	state = fflib.FFParse_after_value
	goto mainparse
handle_Policy:
	{
		if tok == fflib.FFTok_null {
		} else {
			tbuf, err := fs.CaptureField(tok)
			if err != nil {
				return fs.WrapErr(err)
			}
			err = j.Policy.UnmarshalJSON(tbuf)
			if err != nil {
				return fs.WrapErr(err)
			}
		}
		state = fflib.FFParse_after_value
	}
	state = fflib.FFParse_after_value
	goto mainparse
handle_Fee:
	{
		tbuf, err := fs.CaptureField(tok)
		if err != nil {
			return fs.WrapErr(err)
		}
		err = json.Unmarshal(tbuf, &j.Fee)
		if err != nil {
			return fs.WrapErr(err)
		}
	}
	state = fflib.FFParse_after_value
	goto mainparse
wantedvalue:
	return fs.WrapErr(fmt.Errorf("wanted value token, but got token: %v", tok))
wrongtokenerror:
	return fs.WrapErr(fmt.Errorf("ffjson: wanted token: %v, but got token: %v output=%s", wantedTok, tok, fs.Output.String()))
tokerror:
	if fs.BigError != nil {
		return fs.WrapErr(fs.BigError)
	}
	err = fs.Error.ToError()
	if err != nil {
		return fs.WrapErr(err)
	}
	panic("ffjson-generated: unreachable, please report bug.")
done:
	return nil
}
UnmarshalJSONFFLexer fast json unmarshall - template ffjson
package operations
import (
	"bytes"
	"encoding/json"
	"fmt"
	fflib "github.com/pquerna/ffjson/fflib/v1"
)
func (j *VestingBalanceCreateOperation) MarshalJSON() ([]byte, error) {
	var buf fflib.Buffer
	if j == nil {
		buf.WriteString("null")
		return buf.Bytes(), nil
	}
	err := j.MarshalJSONBuf(&buf)
	if err != nil {
		return nil, err
	}
	return buf.Bytes(), nil
}
func (j *VestingBalanceCreateOperation) MarshalJSONBuf(buf fflib.EncodingBuffer) error {
	if j == nil {
		buf.WriteString("null")
		return nil
	}
	var err error
	var obj []byte
	_ = obj
	_ = err
	buf.WriteString(`{ "amount":`)
	err = buf.Encode(&j.Amount)
	if err != nil {
		return err
	}
	buf.WriteString(`,"creator":`)
	{
		obj, err = j.Creator.MarshalJSON()
		if err != nil {
			return err
		}
		buf.Write(obj)
	}
	buf.WriteString(`,"owner":`)
	{
		obj, err = j.Owner.MarshalJSON()
		if err != nil {
			return err
		}
		buf.Write(obj)
	}
	buf.WriteString(`,"policy":`)
	{
		obj, err = j.Policy.MarshalJSON()
		if err != nil {
			return err
		}
		buf.Write(obj)
	}
	buf.WriteByte(',')
	if j.Fee != nil {
		if true {
			buf.WriteString(`"fee":`)
			err = buf.Encode(j.Fee)
			if err != nil {
				return err
			}
			buf.WriteByte(',')
		}
	}
	buf.Rewind(1)
	buf.WriteByte('}')
	return nil
}
const (
	ffjtVestingBalanceCreateOperationbase = iota
	ffjtVestingBalanceCreateOperationnosuchkey
	ffjtVestingBalanceCreateOperationAmount
	ffjtVestingBalanceCreateOperationCreator
	ffjtVestingBalanceCreateOperationOwner
	ffjtVestingBalanceCreateOperationPolicy
	ffjtVestingBalanceCreateOperationFee
)
var ffjKeyVestingBalanceCreateOperationAmount = []byte("amount")
var ffjKeyVestingBalanceCreateOperationCreator = []byte("creator")
var ffjKeyVestingBalanceCreateOperationOwner = []byte("owner")
var ffjKeyVestingBalanceCreateOperationPolicy = []byte("policy")
var ffjKeyVestingBalanceCreateOperationFee = []byte("fee")
func (j *VestingBalanceCreateOperation) UnmarshalJSON(input []byte) error {
	fs := fflib.NewFFLexer(input)
	return j.UnmarshalJSONFFLexer(fs, fflib.FFParse_map_start)
}