public EventSourceMappingConfiguration withStateTransitionReason(String stateTransitionReason) {
        setStateTransitionReason(stateTransitionReason);
        return this;
    }
<p>
Indicates whether a user or Lambda made the last change to the event source mapping.
</p>

@param stateTransitionReason
       Indicates whether a user or Lambda made the last change to the event source mapping.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-lambda/src/main/java/com/amazonaws/services/lambda/model/EventSourceMappingConfiguration.java