[ToA] Add more details in javadoc

    /**

     * Get the current grammatical gender of privileged application from the encrypted file.

     *

     * @return the value of grammatical gender

     * @return the value of system grammatical gender only if the calling app has the permission,

     * otherwise throwing an exception.

     *

     * @throws SecurityException if the caller does not have the required permission.

     *

     * @see Configuration#getGrammaticalGender

     */

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.nio.charset.StandardCharsets;

/**

        @Override

        public int getSystemGrammaticalGender(AttributionSource attributionSource, int userId) {

            return canGetSystemGrammaticalGender(attributionSource)

            if (!checkSystemGrammaticalGenderPermission(mPermissionManager, attributionSource)) {

                throw new SecurityException("AttributionSource: " + attributionSource

                        + " does not have READ_SYSTEM_GRAMMATICAL_GENDER permission.");

            }

            return checkSystemTermsOfAddressIsEnabled()

                    ? GrammaticalInflectionService.this.getSystemGrammaticalGender(

                    attributionSource, userId)

                    : GRAMMATICAL_GENDER_NOT_SPECIFIED;