public void cacheRecoveredDataType(GoType typ, DataType dt) throws IOException {
		TypeRec rec = getTypeRec(typ);
		rec.recoveredDT = dt;
	}
Inserts a mapping between a {@link GoType golang type} and a 
{@link DataType ghidra data type}.
<p>
Useful to prepopulate the data type mapping before recursing into contained/referenced types
that might be self-referencing.

@param typ {@link GoType golang type}
@param dt {@link DataType Ghidra type}
@throws IOException if golang type struct is not a valid struct mapped instance
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/golang/rtti/GoTypeManager.java