Get all issue type schemes

{"maxResults":100,"startAt":0,"total":3,"isLast":true,"values":[{"id":"10000","name":"Default Issue Type Scheme","description":"Default issue type scheme is the list of global issue types. All newly created issue types will automatically be added to this scheme.","defaultIssueTypeId":"10003","isDefault":true},{"id":"10001","name":"SUP: Kanban Issue Type Scheme","description":"A collection of issue types suited to use in a kanban style project.","projects":{"maxResults":100,"startAt":0,"total":1,"isLast":true,"values":[{"self":"project/EX","id":"10000","key":"EX","name":"Example","projectTypeKey":"ProjectTypeKey{key='software'}","simplified":false,"avatarUrls":{"48x48":"secure/projectavatar?size=large&pid=10000","24x24":"secure/projectavatar?size=small&pid=10000","16x16":"secure/projectavatar?size=xsmall&pid=10000","32x32":"secure/projectavatar?size=medium&pid=10000"},"projectCategory":{"id":"10000","description":"Project category description","name":"A project category"}}]}},{"id":"10002","name":"HR: Scrum issue type scheme","description":"","defaultIssueTypeId":"10004","issueTypes":{"maxResults":100,"startAt":0,"total":1,"isLast":true,"values":[{"id":"1000L","description":"Improvement Issue Type","iconUrl":"www.example.com","name":"Improvements","subtask":true,"hierarchyLevel":-1}]}}]}