1. Dart
2. dart:core
3. Sink<T>
4. add abstract method

##### Sink class

1. Constructors
2. Sink
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. add
8. close
9. noSuchMethod
10. toString
11. Operators
12. operator ==

description

# add method Null safety

void add (

1. T data

)

Adds `data` to the sink.

Must not be called after a call to close.

## Implementation

    void add(T data);