public SuccessfulRequest withRequestIdentifier(String requestIdentifier) {
        setRequestIdentifier(requestIdentifier);
        return this;
    }
<p>
Request identifier provided in the API call in the ContactDataRequest to create a contact.
</p>

@param requestIdentifier
       Request identifier provided in the API call in the ContactDataRequest to create a contact.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-connect/src/main/java/com/amazonaws/services/connect/model/SuccessfulRequest.java