public void setClass(String key, Class<?> klazz) {
    setValueInternal(key, klazz.getName());
  }
Adds the given key/value pair to the configuration object. The class can be retrieved by
invoking {@link #getClass(String, Class, ClassLoader)} if it is in the scope of the class
loader on the caller.

@param key The key of the pair to be added
@param klazz The value of the pair to be added
@see #getClass(String, Class, ClassLoader)
amoro-common/src/main/java/org/apache/amoro/config/Configurations.java