I am working on a project that uses the contract first approach. I was given a WSDL and three xsd's. When I use svcutil it generates a wrapper around the response class like so:  
public partial class getDataByIdResponse1 {
    public getDataByIdResponse getDataByIdResponse;
    public getDataByIdResponse1() {
    }
    public getDataByIdResponse1(getDataByIdResponse getDataByIdResponse) {
        this.getDataByIdResponse = getDataByIdResponse;
    }
}
The getDataByIdResponse is wrapped inside a getDataByIdResponse1 object. This is done by svcutil and I have no idea why. The getDataByIdResponse1 object does not exist in the WSDL:
<wsdl:message name="getDataById">
    <wsdl:part name="response" element="tns:getDataByIdResponse"/>
</wsdl:message>
<xs:element name="getDataByIdResponse">
    <xs:complexType>
        <xs:sequence>
            <xs:element name="data" type="sbc:DataType" minOccurs="1" maxOccurs="1" />
        </xs:sequence>
    </xs:complexType>
</xs:element>
Why is the type getDataByIdResponse wrapped in getDataByIdResponse1? Is there a switch for svcutil I should have used?