import com.sun.xml.internal.bind.v2.model.core.RegistryInfo; //导入依赖的package包/类
/**
 * Visits a class with {@link XmlRegistry} and records all the element mappings
 * in it.
 */
public RegistryInfo<T,C> addRegistry(C registryClass, Locatable upstream ) {
    return new RegistryInfoImpl<T,C,F,M>(this,upstream,registryClass);
}
 

import com.sun.xml.internal.bind.v2.model.core.RegistryInfo; //导入依赖的package包/类
/**
 * Gets a {@link RegistryInfo} for the given package.
 *
 * @return
 *      null if no registry exists for the package.
 *      unlike other getXXX methods on this class,
 *      this method is side-effect free.
 */
public RegistryInfo<T,C> getRegistry(String packageName) {
    return registries.get(packageName);
}