@Override
	public boolean isValid() {
		return typ.isValid();
	}
Iterates this type, and any types this type refers to, while registering the types with
the {@link GoRttiMapper} context.
<p>
This method should be overloaded by derived type classes to add any additional types 
referenced by the derived type.
 
@param discoveredTypes set of already iterated types
@return boolean boolean flag, if false the type has already been discovered, if true
the type was encountered for the first time 
@throws IOException if error reading type info
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/golang/rtti/types/GoType.java