10 methods override SqlBase::query()

Comment::query in core/modules/comment/src/Plugin/migrate/source/d6/Comment.php
CommentType::query in core/modules/comment/src/Plugin/migrate/source/CommentType.php
FieldInstance::query in core/modules/field/src/Plugin/migrate/source/d6/FieldInstance.php
File::query in core/modules/file/src/Plugin/migrate/source/d6/File.php
Role::query in core/modules/user/src/Plugin/migrate/source/d6/Role.php
SqlCountCache::query in core/modules/migrate/tests/modules/migrate_sql_count_cache_test/src/Plugin/migrate/source/SqlCountCache.php
Term::query in core/modules/taxonomy/src/Plugin/migrate/source/d6/Term.php
TrackerNode::query in core/modules/tracker/src/Plugin/migrate/source/d7/TrackerNode.php
Variable::query in core/modules/migrate_drupal/src/Plugin/migrate/source/Variable.php
VariableMultiRow::query in core/modules/migrate_drupal/src/Plugin/migrate/source/VariableMultiRow.php

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