code: private static MetaBean metaBeanLookup(Class<?> cls) {
          // handle dynamic beans
          if (cls == FlexiBean.class) {
              return new FlexiBean().metaBean();
          } else if (cls == MapBean.class) {
              return new MapBean().metaBean();
          } else if (DynamicBean.class.isAssignableFrom(cls)) {
              try {
                  return cls.asSubclass(DynamicBean.class).getDeclaredConstructor().newInstance().metaBean();
              } catch (NoSuchMethodException | InvocationTargetException | InstantiationException | IllegalAccessException ex) {
                  throw new IllegalArgumentException("Unable to find meta-bean for a DynamicBean: " + cls.getName(), ex);
              }
          }
          // a Class can be loaded without being initialized
          // in this state, the static initializers have not run, and thus the metabean not registered
          // here initialization is forced to handle that scenario
          try {
              cls = Class.forName(cls.getName(), true, cls.getClassLoader());
          } catch (ClassNotFoundException | Error ex) {
              // should be impossible
              throw new IllegalArgumentException("Unable to find meta-bean: " + cls.getName(), ex);
          }
          MetaBean meta = META_BEANS.get(cls);
          if (meta == null) {
              throw new IllegalArgumentException("Unable to find meta-bean: " + cls.getName());
          }
          return meta;
      }
docs: lookup the MetaBean outside the fast path, aiding hotspot inlining