Change
constructor(id: String, sourceAccount: String, sourceAccountMuxed: String? = null, sourceAccountMuxedId: String? = null, pagingToken: String, createdAt: String, transactionHash: String, transactionSuccessful: Boolean, type: String, links: OperationResponse.Links, transaction: TransactionResponse? = null, trustor: String, trustorMuxed: String? = null, trustorMuxedId: String? = null, trustee: String? = null, assetType: String, assetCode: String? = null, assetIssuer: String? = null, limit: String, liquidityPoolId: String? = null)