wp-includes/IXR/class-IXR-server.php:159 function setCapabilities() { // Initialises capabilities array $this->capabilities = array( 'xmlrpc' => array( 'specUrl' => 'https://xmlrpc.com/spec.md', 'specVersion' => 1 ), 'faults_interop' => array( 'specUrl' => 'https://web.archive.org/web/20240416231938/https://xmlrpc-epi.sourceforge.net/specs/rfc.fault_codes.php', 'specVersion' => 20010516 ), 'system.multicall' => array( 'specUrl' => 'https://web.archive.org/web/20060624230303/http://www.xmlrpc.com/discuss/msgReader$1208?mode=topic', 'specVersion' => 1 ), ); }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/IXR/class-IXR-server.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.