public PortRangeFromTo withFrom(Integer from) {
        setFrom(from);
        return this;
    }
<p>
The first port in the port range.
</p>

@param from
       The first port in the port range.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-securityhub/src/main/java/com/amazonaws/services/securityhub/model/PortRangeFromTo.java