public ListSolFunctionInstancesResult withFunctionInstances(ListSolFunctionInstanceInfo... functionInstances) {
        if (this.functionInstances == null) {
            setFunctionInstances(new java.util.ArrayList<ListSolFunctionInstanceInfo>(functionInstances.length));
        }
        for (ListSolFunctionInstanceInfo ele : functionInstances) {
            this.functionInstances.add(ele);
        }
        return this;
    }
<p>
Network function instances.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setFunctionInstances(java.util.Collection)} or {@link #withFunctionInstances(java.util.Collection)} if
you want to override the existing values.
</p>

@param functionInstances
       Network function instances.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-tnb/src/main/java/com/amazonaws/services/tnb/model/ListSolFunctionInstancesResult.java