BP_Email_Recipient::get_user( string $transform = 'raw' )

	public function get_user( $transform = 'raw' ) {

		// If transform "search-email", find the WP_User if not already set.
		if ( $transform === 'search-email' && ! $this->user_object && $this->address ) {
			$this->user_object = get_user_by( 'email', $this->address );
		}

		/**
		 * Filters the WP_User object for this recipient before it's returned.
		 *
		 * @since BuddyPress 2.5.0
		 *
		 * @param WP_User $name WP_User object for this recipient, or null if not set.
		 * @param string $transform Optional. How the return value was transformed.
		 *                          Accepts 'raw' (default) or 'search-email'.
		 * @param BP_Email $recipient $this Current instance of the email recipient class.
		 */
		return apply_filters( 'bp_email_recipient_get_user', $this->user_object, $transform, $this );
	}