import com.sun.xml.internal.bind.v2.model.runtime.RuntimeMapPropertyInfo; //导入依赖的package包/类
public SingleMapNodeProperty(JAXBContextImpl context, RuntimeMapPropertyInfo prop) {
    super(context, prop);
    acc = prop.getAccessor().optimize(context);
    this.tagName = context.nameBuilder.createElementName(prop.getXmlName());
    this.entryTag = context.nameBuilder.createElementName("","entry");
    this.keyTag = context.nameBuilder.createElementName("","key");
    this.valueTag = context.nameBuilder.createElementName("","value");
    this.nillable = prop.isCollectionNillable();
    this.keyBeanInfo = context.getOrCreate(prop.getKeyType());
    this.valueBeanInfo = context.getOrCreate(prop.getValueType());

    // infer the implementation class
    //noinspection unchecked
    Class<ValueT> sig = (Class<ValueT>) Utils.REFLECTION_NAVIGATOR.erasure(prop.getRawType());
    mapImplClass = ClassFactory.inferImplClass(sig,knownImplClasses);
    // TODO: error check for mapImplClass==null
    // what is the error reporting path for this part of the code?
}
 

import com.sun.xml.internal.bind.v2.model.runtime.RuntimeMapPropertyInfo; //导入依赖的package包/类
public SingleMapNodeProperty(JAXBContextImpl context, RuntimeMapPropertyInfo prop) {
    super(context, prop);
    acc = prop.getAccessor().optimize(context);
    this.tagName = context.nameBuilder.createElementName(prop.getXmlName());
    this.entryTag = context.nameBuilder.createElementName("","entry");
    this.keyTag = context.nameBuilder.createElementName("","key");
    this.valueTag = context.nameBuilder.createElementName("","value");
    this.nillable = prop.isCollectionNillable();
    this.keyBeanInfo = context.getOrCreate(prop.getKeyType());
    this.valueBeanInfo = context.getOrCreate(prop.getValueType());

    // infer the implementation class
    Class<ValueT> sig = ReflectionNavigator.REFLECTION.erasure(prop.getRawType());
    mapImplClass = ClassFactory.inferImplClass(sig,knownImplClasses);
    // TODO: error check for mapImplClass==null
    // what is the error reporting path for this part of the code?
}