public function setup_meta( $meta ) {
		foreach ( $meta as $key => $value ) {
			$key = preg_replace( '/^' . self::$meta_key_prefix . '/', '', $key );
			$this->meta[ $key ] = maybe_unserialize( is_array( $value ) ? reset( $value ) : $value );
		}

		// `source` will be empty when importing .ics files
		$this->meta['source'] = ! empty ( $this->meta['source'] ) ? $this->meta['source'] : '';
		$original_source = $this->meta['source'];

		// Intelligently prepend "http://" if the protocol is missing from the source URL
		if ( ! empty( $this->meta['source'] ) && false === strpos( $this->meta['source'], '://' ) ) {
			$this->meta['source'] = 'http://' . $this->meta['source'];
		}

		/**
		 * Provides an opportunity to set or modify the source URL for an import.
		 *
		 * @since 4.5.11
		 *
		 * @param string  $source
		 * @param string  $original_source
		 * @param WP_Post $record
		 * @param array   $meta
		 */
		$this->meta['source'] = apply_filters(
			'tribe_aggregator_meta_source',
			$this->meta['source'],
			$original_source,
			$this->post,
			$this->meta
		);

		// This prevents lots of isset checks for no reason
		if ( empty( $this->meta['activity'] ) ) {
			$this->meta['activity'] = new Tribe__Events__Aggregator__Record__Activity();
		}
	}