package com.atlassian.plugins.rest.common.expand.resolver;
   
   import com.atlassian.plugins.rest.common.expand.EntityExpander;
   
   import static com.google.common.base.Preconditions.*;
   
   abstract class AbstractEntityExpanderResolver implements EntityExpanderResolver {
       public final <T> boolean hasExpander(T instance) {
           return hasExpander(checkNotNull(instance).getClass());
      }
  
      @SuppressWarnings("unchecked")
      public final <T> EntityExpander<T> getExpander(T instance) {
          return (EntityExpander<T>) getExpander(checkNotNull(instance).getClass());
      }
  }