Make InputDevice.isExternal() public

    method public boolean[] hasKeys(int...);

    method public boolean hasMicrophone();

    method public boolean isEnabled();

    method public boolean isExternal();

    method public boolean isVirtual();

    method public boolean supportsSource(int);

    method public void writeToParcel(android.os.Parcel, int);

import android.content.Context;

import android.hardware.input.InputDeviceIdentifier;

import android.hardware.input.InputManager;

import android.os.Build;

import android.os.NullVibrator;

import android.os.Parcel;

import android.os.Parcelable;

    private final int mProductId;

    private final String mDescriptor;

    private final InputDeviceIdentifier mIdentifier;

    @UnsupportedAppUsage

    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P)

    private final boolean mIsExternal;

    private final int mSources;

    private final int mKeyboardType;

     * peripheral bus), otherwise it is built-in.

     *

     * @return True if the device is external.

     *

     * @hide

     */

    @UnsupportedAppUsage

    public boolean isExternal() {

        return mIsExternal;

    }