Source

File: wp-includes/class-wp-xmlrpc-server.php

protected function _prepare_term( $term ) {
		$_term = $term;
		if ( ! is_array( $_term ) ) {
			$_term = get_object_vars( $_term );
		}

		// For integers which may be larger than XML-RPC supports ensure we return strings.
		$_term['term_id']          = strval( $_term['term_id'] );
		$_term['term_group']       = strval( $_term['term_group'] );
		$_term['term_taxonomy_id'] = strval( $_term['term_taxonomy_id'] );
		$_term['parent']           = strval( $_term['parent'] );

		// Count we are happy to return as an integer because people really shouldn't use terms that much.
		$_term['count'] = intval( $_term['count'] );

		// Get term meta.
		$_term['custom_fields'] = $this->get_term_custom_fields( $_term['term_id'] );

		/**
		 * Filters XML-RPC-prepared data for the given term.
		 *
		 * @since 3.4.0
		 *
		 * @param array        $_term An array of term data.
		 * @param array|object $term  Term object or array.
		 */
		return apply_filters( 'xmlrpc_prepare_term', $_term, $term );
	}