clone method
- @Deprecated('Using this can add significant overhead to your binary. ' 'Use [GeneratedMessageGenericExtensions.deepCopy] instead. ' 'Will be removed in next major version')
override
    Creates a deep copy of the fields in this message. (The generated code uses mergeFromMessage.)
Implementation
@$core.Deprecated('Using this can add significant overhead to your binary. '
    'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
    'Will be removed in next major version')
TransactionInput clone() => TransactionInput()..mergeFromMessage(this);