public void setLastModifiedDate(Long lastModifiedDate) {
        this.lastModifiedDate = lastModifiedDate;
    }
<p>
The timestamp of when the configuration was last modified.
</p>

@param lastModifiedDate
       The timestamp of when the configuration was last modified.
aws-java-sdk-opensearchserverless/src/main/java/com/amazonaws/services/opensearchserverless/model/SecurityConfigDetail.java