How to add dynamically handler items to atlassian-plugin.xml

[botronnikolay]

Hi Folks

I am writting some custom plugin to handle some custom field types.So for every custom field type i have to add in atlassian-plugin.xml something like

<FieldHandler>

<key>somekey<>

<implementingclas>myclass<>

</>

Now when i have 2-3 such fileds i have no issue, but what if i have 20-30 ?So for example for some old posts , lets say for module-type, we had the elegant 

moduleFactory.createModule(moduleClassName, this);

 But not for my FieldHandler, is there some Factory class for that in the Jira API ? I couldnt find any