com.atlassian.jira.web.action.admin.issuetypes
Interfaces 
AddIssueTypeAction
ExecutableAction
ManageableOptionType
Classes 
AbstractManageIssueTypeOptionsAction
AbstractManageIssueTypeOptionsAction.FieldConfigPredicate
AddNewIssueTypeToScheme
ConfigureIssueTypeOptionScheme
ConfigureOptionScheme
DeleteIssueType
EditIssueType
IssueTypeManageableOption
MigrateIssueTypes
ProjectIssueTypeSchemeHelper
ViewIssueTypes