Add getInterfaceList module-lib API in EthernetManager.

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import java.util.ArrayList;

import java.util.List;

import java.util.Objects;

import java.util.concurrent.Executor;

import java.util.function.IntConsumer;

            maybeRemoveServiceListener();

        }

    }

    /**

     * Returns an array of existing Ethernet interface names regardless whether the interface

     * is available or not currently.

     * @hide

     */

    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)

    @SystemApi(client = MODULE_LIBRARIES)

    @NonNull

    public List<String> getInterfaceList() {

        try {

            return mService.getInterfaceList();

        } catch (RemoteException e) {

            throw e.rethrowAsRuntimeException();

        }

    }

}

import android.net.INetworkInterfaceOutcomeReceiver;

import android.net.ITetheredInterfaceCallback;

import java.util.List;

/**

 * Interface that answers queries about, and allows changing

 * ethernet configuration.

    void connectNetwork(String iface, in INetworkInterfaceOutcomeReceiver listener);

    void disconnectNetwork(String iface, in INetworkInterfaceOutcomeReceiver listener);

    void setEthernetEnabled(boolean enabled);

    List<String> getInterfaceList();

}