@Override
	public boolean isValid() {
		return super.isValid() && typ.getSize() == programContext.getPtrSize();
	}
Returns a string that describes the function type as a golang-ish function decl.

@param funcName optional name of a function
@return golang func decl string
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/golang/rtti/types/GoFuncType.java