- getFunctionMapper
Returns the function mapper, or null if not available.
- getVariableResolver
Returns the variable resolver, or null if not available.
- getAttribute
Returns the value of the specified attribute, or null if not available.
- removeAttribute
Removes the attribute.
- setAttribute
Sets the value of the specified attribute
- hasAttribute
Returns if the attribute is available.Notice that null is a valid value, so you can tell if an attri