wffweb/src/main/java/com/webfirmframework/wffweb/tag/html/AbstractHtml.java
public final String getOpeningTag() {
        if (isRebuild() || isModified()) {
            final Lock lock = sharedObject.getLock(ACCESS_OBJECT).writeLock();
            try {
                lock.lock();

                buildOpeningTag(true);
            } finally {
                lock.unlock();
            }

        }
        return openingTag;
    }
public final String getOpeningTag() {
        if (isRebuild() || isModified()) {
            final Lock lock = sharedObject.getLock(ACCESS_OBJECT).writeLock();
            try {
                lock.lock();

                buildOpeningTag(true);
            } finally {
                lock.unlock();
            }

        }
        return openingTag;
    }
For internal purpose. Not recommended for external purpose.

@return the opening tag of this object
@author WFF