Change record status: 
Introduced in branch: 
7.x-3.x
Introduced in version: 
7.x-3.19
Description: 

The Views handlers and plugins now allow option definitions to be overridden. As a result, any plugins or handlers which override their set_default_options(), unpack_translatables(), unpack_options(), export_options() methods will have to ensure they call $this->altered_option_definition() instead of calling $this->option_definition() directly, or at least call the parent method.

Impacts: 
Module developers