Applied catbuffer on aggregate transaction

Author: rg911

src/model/transaction/MosaicSupplyChangeTransaction.ts

@@ -34,6 +34,7 @@ import { Transaction } from './Transaction';
 import { TransactionInfo } from './TransactionInfo';
 import { TransactionType } from './TransactionType';
 import { TransactionVersion } from './TransactionVersion';
+import { Convert } from '../../core/format';
 
 /**
  * In case a mosaic has the flag 'supplyMutable' set to true, the creator of the mosaic can change the supply,

test/model/transaction/AggregateTransaction.spec.ts

@@ -106,7 +106,7 @@ describe('AggregateTransaction', () => {
             NetworkType.MIJIN_TEST,
             []);
 
-        const signedTransaction = aggregateTransaction.signWith(account, generationHash);
+        const signedTransaction = aggregateTransaction.signWithCatbuffer(account, generationHash);
 
         expect(signedTransaction.payload.substring(0, 8)).to.be.equal('CD000000');
         expect(signedTransaction.payload.substring(240, 256)).to.be.equal('5100000051000000');