6 calls to FormBase::config()

CommentForm::form in core/modules/comment/src/CommentForm.php
Gets the actual form array to be built.
ConfigSingleImportForm::validateForm in core/modules/config/src/Form/ConfigSingleImportForm.php
Form validation handler.
Overview::buildForm in core/modules/forum/src/Form/Overview.php
Form constructor.
UserLoginForm::buildForm in core/modules/user/src/Form/UserLoginForm.php
Form constructor.
UserLoginForm::validateAuthentication in core/modules/user/src/Form/UserLoginForm.php
Checks supplied username/password against local users table.
UserLoginForm::validateFinal in core/modules/user/src/Form/UserLoginForm.php
Checks if user was not authenticated, or if too many logins were attempted.

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.