protected function prepare_storage() {

		$name = $this->settings['name'];

		// Field Name => Storage Key.
		$users_fields = array(

			// We prefer these aliases for legacy reasons.
			'email_address' => 'user_email',
			'password'      => 'user_pass',

			// Default wp_users column names.
			'user_login'    => 'user_login',
			'user_pass'     => 'user_pass',
			'user_nicename' => 'user_nicename',
			'user_email'    => 'user_email',
			'user_url'      => 'user_url',
			'display_name'  => 'display_name',

		);

		// Set data storage for items on the wp_users table.
		if ( in_array( $name, array_keys( $users_fields ), true ) ) {
			$this->settings['data_store'] = 'users';
			$name                         = $users_fields[ $name ];

			// Don't save default core confirmation fields.
		} elseif ( in_array( $name, array( 'email_address_confirm', 'password_confirm' ), true ) ) {
			$this->settings['data_store'] = false;
		}

		$this->settings['data_store_key'] = $name;

	}