{
  "$id": "https://example.com/arrays.schema.json",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "title": "Object",
  "required": ["type", "name"],
  "$defs": {
    "CustomType": {
      "$ref": "21-local-reference-nested.json#/$defs/CustomType"
    },
    "OptionalCustomType": {
      "oneOf": [
        {"type": "null" },
        {"$ref": "#/$defs/CustomType" }
      ]
    },
    "ComplexType": {
      "type": "object",
      "properties": {
        "prop1": { "$ref": "#/$defs/CustomType" },
        "prop2": { "$ref": "#/$defs/OptionalCustomType" }
      }
    },
    "OOType": {
      "type": "object",
      "properties": {
        "myType1": { "$ref": "#/$defs/CustomType" },
        "myType2": { "$ref": "#/$defs/OptionalCustomType" },
        "myType3": { "$ref": "#/$defs/CustomType" }
      }
    },
    "SecondType": {
      "allOf": [
        { "$ref": "#/$defs/OOType" },
        {
          "type": "object",
          "properties": {
            "myType3": { "$ref": "#/$defs/OptionalCustomType" }
          }
        }
      ]
    }
  }}