public TransitionState withLastChangedBy(String lastChangedBy) {
        setLastChangedBy(lastChangedBy);
        return this;
    }
<p>
The ID of the user who last changed the transition state.
</p>

@param lastChangedBy
       The ID of the user who last changed the transition state.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-codepipeline/src/main/java/com/amazonaws/services/codepipeline/model/TransitionState.java