wikimedia / mediawiki

			foreach ( $data as $key => $item ) {

				foreach ( $codeSequence as $csCode ) {

					if ( isset( $item[$csCode] ) ) {

						$this->mergeItem( $key, $extensionData[$csCode][$key], $item[$csCode] );

						$used = true;

					}

				}

			}

			}

			# Merge non-JSON extension data

			if ( isset( $extensionData[$csCode] ) ) {

				foreach ( $extensionData[$csCode] as $key => $item ) {

					$this->mergeItem( $key, $csData[$key], $item );

				}

			}

			if ( $csCode === $code ) {

				# Merge core data into extension data