public XMLGraph transferValidate(final ValidateStm s, XMLGraph base) {
final SchemaType schema = s.getSchema();
final XMLGraph g = global_xg.clone();
g.useFragment(new XMLGraphFragment(schema.getTypeNode(), schema.getTemplateGaps(), schema.getAttributeGaps(), schema.getGapTypes()));
g.sharpen();
return g;
}
/**
* Returns the XML node corresponding to the given schema type.