How can I find a derivation of an composite type?

In the following case, how can I find its derived type 9459 through 9460?

!9458 = !DILocalVariable(name: "kdArg", scope: !9447, file: !3, line: 183, type: !9459)
!9459 = !DIDerivedType(tag: DW_TAG_typedef, name: "kdStrobeDrvArg", file: !6, line: 82, baseType: !9460)
!9460 = distinct !DICompositeType(tag: DW_TAG_structure_type, file: !6, line: 77, size: 96, elements: !9461)
!9461 = !{!9462, !9463, !9464}
!9462 = !DIDerivedType(tag: DW_TAG_member, name: "sensorDev", scope: !9460, file: !6, line: 78, baseType: !99, size: 32)
!9463 = !DIDerivedType(tag: DW_TAG_member, name: "strobeId", scope: !9460, file: !6, line: 79, baseType: !99, size: 32, offset: 32)
!9464 = !DIDerivedType(tag: DW_TAG_member, name: "arg", scope: !9460, file: !6, line: 80, baseType: !99, size: 32, offset: 64)