public VpcAttachmentOptions withCidrBlock(String cidrBlock) {
        setCidrBlock(cidrBlock);
        return this;
    }
<p>
The CIDR block to be reserved for OpenSearch Ingestion to create elastic network interfaces (ENIs).
</p>

@param cidrBlock
       The CIDR block to be reserved for OpenSearch Ingestion to create elastic network interfaces (ENIs).
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-osis/src/main/java/com/amazonaws/services/osis/model/VpcAttachmentOptions.java