public void setStreamName(String streamName) {
    this.streamName = streamName;
  }
Setter for the StreamName parameter. See also {@link #activateOptions()} for when this is called.
Example: {@literal <param name="StreamName" value="ExampleStreamName"/>}
@param streamName The configured stream name.
samza-log4j/src/main/java/org/apache/samza/logging/log4j/StreamAppender.java