code: public boolean getAttributeValueAsBoolean(final String _key)
          throws EFapsException
      {
          final String value = getAttributeValue(_key);
          return value == null ? false : Boolean.parseBoolean(value);
      }
docs: Returns for given <code>_key</code> the related boolean attribute value.
  If no attribute value is found <i>false</i> is returned.
  
  @param _key key of searched attribute
  @return found boolean attribute value; if not found <i>false</i>
  @throws EFapsException on error
  @see #attributes