• active_support/core_ext/hash/indifferent_access
• active_support/core_ext/array/wrap
• active_support/core_ext/string/filters
• active_support/core_ext/object/to_query
• action_dispatch/http/upload
• rack/test
• stringio
• set
• yaml

• MODULE ActionController
• MODULE ActionController::StrongParameters
• MODULE ActiveSupport
• CLASS ActionController::InvalidParameterKey
• CLASS ActionController::ParameterMissing
• CLASS ActionController::Parameters
• CLASS ActionController::UnfilteredParameters
• CLASS ActionController::UnpermittedParameters