6 methods override HandlerBase::buildOptionsForm() in Views (for Drupal 7) 8.3

AreaPluginBase::buildOptionsForm in lib/Drupal/views/Plugin/views/area/AreaPluginBase.php

Default options form that provides the label widget that all fields should have.

ArgumentPluginBase::buildOptionsForm in lib/Drupal/views/Plugin/views/argument/ArgumentPluginBase.php

Build the options form.

FieldPluginBase::buildOptionsForm in lib/Drupal/views/Plugin/views/field/FieldPluginBase.php

Default options form that provides the label widget that all fields should have.

FilterPluginBase::buildOptionsForm in lib/Drupal/views/Plugin/views/filter/FilterPluginBase.php

Provide the basic form which calls through to subforms. If overridden, it is best to call through to the parent, or to at least make sure all of the functions in this form are called.

RelationshipPluginBase::buildOptionsForm in lib/Drupal/views/Plugin/views/relationship/RelationshipPluginBase.php

Default options form that provides the label widget that all fields should have.

SortPluginBase::buildOptionsForm in lib/Drupal/views/Plugin/views/sort/SortPluginBase.php

Basic options for all sort criteria