public void setStreamId(String streamId) {
        this.streamId = streamId;
    }
This value is required if the upstream system uses this identifier because without it, the SRT handshake between
MediaLive (the caller) and the upstream system (the listener) might fail.

@param streamId
       This value is required if the upstream system uses this identifier because without it, the SRT handshake
       between MediaLive (the caller) and the upstream system (the listener) might fail.
aws-java-sdk-medialive/src/main/java/com/amazonaws/services/medialive/model/SrtCallerSourceRequest.java