Document AutofillValue.forText() thread safety...

import static android.view.View.AUTOFILL_TYPE_TEXT;

import static android.view.View.AUTOFILL_TYPE_TOGGLE;

import static android.view.autofill.Helper.sDebug;

import static android.view.autofill.Helper.sVerbose;

import android.annotation.NonNull;

import android.annotation.Nullable;

import android.os.Looper;

import android.os.Parcel;

import android.os.Parcelable;

import android.text.TextUtils;

import android.util.Log;

import android.view.View;

import com.android.internal.util.Preconditions;

 * {@link View#getAutofillType()}.

 */

public final class AutofillValue implements Parcelable {

    private static final String TAG = "AutofillValue";

    private final @View.AutofillType int mType;

    private final @NonNull Object mValue;

     * Creates a new {@link AutofillValue} to autofill a {@link View} representing a text field.

     *

     * <p>See {@link View#AUTOFILL_TYPE_TEXT} for more info.

     *

     * <p><b>Note:</b> This method is not thread safe and can throw an exception if the

     * {@code value} is modified by a different thread before it returns.

     */

    public static AutofillValue forText(@Nullable CharSequence value) {

        if (sVerbose && !Looper.getMainLooper().isCurrentThread()) {

            Log.v(TAG, "forText() not called on main thread: " + Thread.currentThread());

        }

        return value == null ? null : new AutofillValue(AUTOFILL_TYPE_TEXT,

                TextUtils.trimNoCopySpans(value));

    }