public VpcInterface withRoleArn(String roleArn) {
        setRoleArn(roleArn);
        return this;
    }
Role Arn MediaConnect can assumes to create ENIs in customer's account

@param roleArn
       Role Arn MediaConnect can assumes to create ENIs in customer's account
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-mediaconnect/src/main/java/com/amazonaws/services/mediaconnect/model/VpcInterface.java