Obsolete class XmlSchemaCollection

I have created a custom receive pipeline component and I need to validate
the 
incoming message contents against the schema. Currently I use the pipeline

context property to obtain the schema. My code looks something like this:


private static System.Xml.Schema.XmlSchemaSet 
GetSchemaSet(Microsoft.BizTalk.Component.Interop.IPipelineContext 
pContext)
{
    System.Xml.Schema.XmlSchemaSet schemaSet;
    Microsoft.BizTalk.Component.Interop.IDo***entSpec docSpec;
    System.Xml.Schema.XmlSchemaCollection schemaCollection;

    try {
        docSpec = pContext.GetDo***entSpecByType(DOC_SPEC_TYPE);
        schemaCollection = docSpec.GetSchemaCollection();

        if (schemaCollection.Count > 0) {
            schemaSet = new System.Xml.Schema.XmlSchemaSet();
            foreach (System.Xml.Schema.XmlSchema schema in
schemaCollection) {
                schemaSet.Add(schema);
            }
        }
    }
    catch { /* If any errors occur, just return a null SchemaSet */ }

    return schemaSet;
}

According to Microsoft's do***entation, XmlSchemaCollection is an obsolete

class, yet this is the return type for IDo***entSpec.GetSchemaCollection.
Am 
I handling this the wrong way, or is there another way I could be loading
the 
schemas into a XmlSchemaSet collection?

Thanks in advance.

-mustang