public ModifyVpcEndpointRequest withSubnetConfigurations(SubnetConfiguration... subnetConfigurations) {
        if (this.subnetConfigurations == null) {
            setSubnetConfigurations(new com.amazonaws.internal.SdkInternalList<SubnetConfiguration>(subnetConfigurations.length));
        }
        for (SubnetConfiguration ele : subnetConfigurations) {
            this.subnetConfigurations.add(ele);
        }
        return this;
    }
<p>
The subnet configurations for the endpoint.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setSubnetConfigurations(java.util.Collection)} or {@link #withSubnetConfigurations(java.util.Collection)}
if you want to override the existing values.
</p>

@param subnetConfigurations
       The subnet configurations for the endpoint.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/ModifyVpcEndpointRequest.java