{
  "@context": "http://www.w3.org/ns/shex.jsonld",
  "type": "Schema",
  "shapes": [
   { "id": "http://schema.example/IssueShape",
     "type": "ShapeDecl",
     "shapeExpr": {
     "type": "Shape",
     "expression":
    { "type": "TripleConstraint",
      "predicate": "http://schema.example/reproducedBy",
      "valueExpr": "http://schema.example/TesterShape" } } },
   { "id": "http://schema.example/TesterShape",
     "type": "ShapeDecl",
     "shapeExpr": {
     "type": "Shape",
     "expression":
    { "type": "TripleConstraint",
      "predicate": "http://schema.example/role",
      "valueExpr":
      { "type": "NodeConstraint",
        "values": [ "http://schema.example/testingRole" ] } } } }
  ] }