Inital from Sources of main:
KaNamedClassSymbol:
  anchorPsi: KtClass
  annotations: [
    org/jetbrains/kotlin/plugin/sandbox/MyInterfaceSupertype()
      psi: KtAnnotationEntry
  ]
  classId: foo/Foo
  classKind: CLASS
  companionObject: null
  contextReceivers: []
  isActual: false
  isData: false
  isExpect: false
  isExternal: false
  isFun: false
  isInline: false
  isInner: false
  location: TOP_LEVEL
  modality: FINAL
  name: Foo
  origin: SOURCE
  psi: KtClass
  realPsi: KtClass
  superTypes: [
    KaUsualClassType:
      annotations: []
      typeArguments: []
      type: kotlin/Any
    KaUsualClassType:
      annotations: []
      typeArguments: []
      type: foo/MyInterface
  ]
  typeParameters: []
  visibility: PUBLIC

Restored in Sources of restoreInContextOf:
KaNamedClassSymbol:
  anchorPsi: KtClass
  annotations: [
    org/jetbrains/kotlin/plugin/sandbox/MyInterfaceSupertype()
      psi: KtAnnotationEntry
  ]
  classId: foo/Foo
  classKind: CLASS
  companionObject: null
  contextReceivers: []
  isActual: false
  isData: false
  isExpect: false
  isExternal: false
  isFun: false
  isInline: false
  isInner: false
  location: TOP_LEVEL
  modality: FINAL
  name: Foo
  origin: SOURCE
  psi: KtClass
  realPsi: KtClass
  superTypes: [
    KaUsualClassType:
      annotations: []
      typeArguments: []
      type: kotlin/Any
    KaUsualClassType:
      annotations: []
      typeArguments: []
      type: foo/MyInterface
  ]
  typeParameters: []
  visibility: PUBLIC
