public DescribeIndexFieldsRequest withFieldNames(java.util.Collection<String> fieldNames) {
        setFieldNames(fieldNames);
        return this;
    }
<p>
A list of the index fields you want to describe. If not specified, information is returned for all configured
index fields.
</p>

@param fieldNames
       A list of the index fields you want to describe. If not specified, information is returned for all
       configured index fields.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-cloudsearch/src/main/java/com/amazonaws/services/cloudsearchv2/model/DescribeIndexFieldsRequest.java