public void setRoleArn(String roleArn) {
        this.roleArn = roleArn;
    }
<p>
An IAM role that gives Amazon Kendra permissions to access thesaurus file specified in <code>SourceS3Path</code>.
</p>

@param roleArn
       An IAM role that gives Amazon Kendra permissions to access thesaurus file specified in
       <code>SourceS3Path</code>.
aws-java-sdk-kendra/src/main/java/com/amazonaws/services/kendra/model/UpdateThesaurusRequest.java