@Override
    public ModifyVpcTenancyResult modifyVpcTenancy(ModifyVpcTenancyRequest request) {
        request = beforeClientExecution(request);
        return executeModifyVpcTenancy(request);
    }
<p>
Modifies the instance tenancy attribute of the specified VPC. You can change the instance tenancy attribute of a
VPC to <code>default</code> only. You cannot change the instance tenancy attribute to <code>dedicated</code>.
</p>
<p>
After you modify the tenancy of the VPC, any new instances that you launch into the VPC have a tenancy of
<code>default</code>, unless you specify otherwise during launch. The tenancy of any existing instances in the
VPC is not affected.
</p>
<p>
For more information, see <a
href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/dedicated-instance.html">Dedicated Instances</a> in the
<i>Amazon EC2 User Guide</i>.
</p>

@param modifyVpcTenancyRequest
@return Result of the ModifyVpcTenancy operation returned by the service.
@sample AmazonEC2.ModifyVpcTenancy
@see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/ModifyVpcTenancy" target="_top">AWS API
     Documentation</a>
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/AmazonEC2Client.java