Examples of com.hp.hpl.jena.reasoner.rulesys.Builtin.headAction()

              // }
            } else if (hClause instanceof Functor && isAdd) {
                Functor f = (Functor)hClause;
                Builtin imp = f.getImplementor();
                if (imp != null) {
                    imp.headAction(f.getBoundArgs(env), f.getArgLength(), context);
                } else {
                    throw new ReasonerException("Invoking undefined Functor " + f.getName() +" in " + rule.toShortString());
                }
            } else if (hClause instanceof Rule) {
                Rule r = (Rule)hClause;

              // }
            } else if (hClause instanceof Functor && isAdd) {
                Functor f = (Functor)hClause;
                Builtin imp = f.getImplementor();
                if (imp != null) {
                    imp.headAction(f.getBoundArgs(env), f.getArgLength(), context);
                } else {
                    throw new ReasonerException("Invoking undefined Functor " + f.getName() +" in " + rule.toShortString());
                }
            } else if (hClause instanceof Rule) {
                Rule r = (Rule)hClause;

              // }
            } else if (hClause instanceof Functor && isAdd) {
                Functor f = (Functor)hClause;
                Builtin imp = f.getImplementor();
                if (imp != null) {
                    imp.headAction(f.getBoundArgs(env), f.getArgLength(), context);
                } else {
                    throw new ReasonerException("Invoking undefined Functor " + f.getName() +" in " + rule.toShortString());
                }
            } else if (hClause instanceof Rule) {
                Rule r = (Rule)hClause;

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