human
Solve the following python programming problem given the following code:
def __init__(self, namespaceHTMLElements, fullTree = False) : 
    builder = etree_builders.getETreeModule (etree, fullTree = fullTree) 
    infosetFilter = self.infosetFilter = ihatexml.InfosetFilter () 
    self.namespaceHTMLElements = namespaceHTMLElements 
    class Attributes (dict) : 
        def __init__(self, element, value = { 
            
}) : 
            self._element = element 
            dict.__init__ (self, value) 
            for (key, value) in self.items () : 
                if isinstance (key, tuple) : 
                    name = ('{%s}%s' % (key [2], infosetFilter.coerceAttribute (key [1]))) 
else : 
                    name = infosetFilter.coerceAttribute (key) 
self._element._element.attrib [name] = value 
def __setitem__(self, key, value) : 
            dict.__setitem__ (self, key, value) 
            if isinstance (key, tuple) : 
                name = ('{%s}%s' % (key [2], infosetFilter.coerceAttribute (key [1]))) 
else : 
                name = infosetFilter.coerceAttribute (key) 
self._element._element.attrib [name] = value 
class Element (builder.Element) : 
        def __init__(self, name, namespace) : 
            name = infosetFilter.coerceElement (name) 
            builder.Element.__init__ (self, name, namespace = namespace) 
            self._attributes = Attributes (self) 
def _setName(self, name) : 
            self._name = infosetFilter.coerceElement (name) 
            self._element.tag = self._getETreeTag (self._name, self._namespace) 
def _getName(self) : 
            return infosetFilter.fromXmlName (self._name) 
name = property (_getName, _setName) 
        def _getAttributes(self) : 
            return self._attributes 
def _setAttributes(self, attributes) : 
            self._attributes = Attributes (self, attributes) 
attributes = property (_getAttributes, _setAttributes) 
        def insertText(self, data, insertBefore = None) : 
            data = infosetFilter.coerceCharacters (data) 
            builder.Element.insertText (self, data, insertBefore) 
def...
    
    Given the code above, what is a proper replacement for <MASK>? Choose among: builder, infosetFilter, namespaceHTMLElements, self, fullTree
assistant
#Here is a proper replacement for <MASK>.
namespaceHTMLElements