code: private void extractMechanism(EntryReact entry) {
          String mechanismName = "org.openscience.cdk.reaction.mechanism." + entry.getMechanism();
          try {
              mechanism = (IReactionMechanism) this.getClass().getClassLoader().loadClass(mechanismName).newInstance();
              logger.info("Loaded mechanism: ", mechanismName);
          } catch (ClassNotFoundException exception) {
              logger.error("Could not find this IReactionMechanism: ", mechanismName);
              logger.debug(exception);
          } catch (InstantiationException | IllegalAccessException exception) {
              logger.error("Could not load this IReactionMechanism: ", mechanismName);
              logger.debug(exception);
          }
      }
docs: Extract the mechanism necessary for this reaction.
  
  @param entry  The EntryReact object