public void setAllocationMaxNetmaskLength(Integer allocationMaxNetmaskLength) {
        this.allocationMaxNetmaskLength = allocationMaxNetmaskLength;
    }
<p>
The maximum netmask length possible for CIDR allocations in this IPAM pool to be compliant. The maximum netmask
length must be greater than the minimum netmask length. Possible netmask lengths for IPv4 addresses are 0 - 32.
Possible netmask lengths for IPv6 addresses are 0 - 128.
</p>

@param allocationMaxNetmaskLength
       The maximum netmask length possible for CIDR allocations in this IPAM pool to be compliant. The maximum
       netmask length must be greater than the minimum netmask length. Possible netmask lengths for IPv4
       addresses are 0 - 32. Possible netmask lengths for IPv6 addresses are 0 - 128.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/CreateIpamPoolRequest.java