wffweb/src/main/java/com/webfirmframework/wffweb/tag/repository/TagRepository.java
public boolean exists(final AbstractAttribute attribute)
            throws NullValueException {

        if (attribute == null) {
            throw new NullValueException("attribute cannot be null");
        }

        for (final AbstractHtml ownerTag : attribute.getOwnerTags()) {
            if (browserPage.contains(ownerTag)) {
                return true;
            }
        }

        return false;
    }
public boolean exists(final AbstractAttribute attribute)
            throws NullValueException {

        if (attribute == null) {
            throw new NullValueException("attribute cannot be null");
        }

        for (final AbstractHtml ownerTag : attribute.getOwnerTags()) {
            if (browserPage.contains(ownerTag)) {
                return true;
            }
        }

        return false;
    }
Checks the existence of an attribute instance.

@param attribute
@return true if the given attribute instance exists anywhere in the
browser page.
@throws NullValueException
if the {@code attribute} is null
@since 2.1.8
@author WFF