src/main/java/com/infilos/DAGraph.java
/**
     * whether this node is contained
     *
     * @param node is source or target node
     *
     * @return true if contains
     */
whether this node is contained
@param node is source or target node

@return true if contains
whether this node is contained @param node is source or target node @return true if contains
public boolean containsNode(Node node) {
        lock.readLock().lock();
        try {
            return nodes.containsKey(node);
        } finally {
            lock.readLock().unlock();
        }
    }
public boolean containsNode ( Node node ) { lock . readLock ( ) . lock ( ) ; try { return nodes . containsKey ( node ) ; } finally { lock . readLock ( ) . unlock ( ) ; } }
whether this node is contained
 @param node is source or target node
whether this node is contained @param node is source or target node