public KinesisInputDescriptor<StreamMessageType> withAccessKey(String accessKey) {
    this.accessKey = Optional.ofNullable(StringUtils.stripToNull(accessKey));
    return this;
  }
Kinesis access key name for the system stream.
@param accessKey Kinesis access key name
@return this input descriptor
samza-aws/src/main/java/org/apache/samza/system/kinesis/descriptors/KinesisInputDescriptor.java