curl --request GET \
  --url https://api.example.com/v1/projects/{project}/issues/{issue}

{
  "name": "<string>",
  "title": "<string>",
  "description": "<string>",
  "type": "TYPE_UNSPECIFIED",
  "status": "ISSUE_STATUS_UNSPECIFIED",
  "approvers": [
    {
      "status": "STATUS_UNSPECIFIED",
      "principal": "<string>"
    }
  ],
  "approvalTemplate": {
    "flow": {
      "roles": [
        "<string>"
      ]
    },
    "title": "<string>",
    "description": "<string>"
  },
  "creator": "<string>",
  "createTime": "2023-11-07T05:31:56Z",
  "updateTime": "2023-11-07T05:31:56Z",
  "plan": "<string>",
  "rollout": "<string>",
  "grantRequest": {
    "role": "<string>",
    "user": "<string>",
    "condition": {
      "id": "<string>",
      "constExpr": {
        "nullValue": "NULL_VALUE",
        "boolValue": true,
        "int64Value": "<string>",
        "uint64Value": "<string>",
        "doubleValue": 123,
        "stringValue": "<string>",
        "bytesValue": "<string>",
        "durationValue": "<string>",
        "timestampValue": "2023-11-07T05:31:56Z"
      },
      "identExpr": {
        "name": "<string>"
      },
      "selectExpr": {
        "operand": "<unknown>",
        "field": "<string>",
        "testOnly": true
      },
      "callExpr": {
        "target": "<unknown>",
        "function": "<string>",
        "args": "<array>"
      },
      "listExpr": {
        "elements": "<array>",
        "optionalIndices": [
          123
        ]
      },
      "structExpr": {
        "messageName": "<string>",
        "entries": [
          {
            "id": "<string>",
            "fieldKey": "<string>",
            "mapKey": "<unknown>",
            "value": "<unknown>",
            "optionalEntry": true
          }
        ]
      },
      "comprehensionExpr": {
        "iterVar": "<string>",
        "iterVar2": "<string>",
        "iterRange": "<unknown>",
        "accuVar": "<string>",
        "accuInit": "<unknown>",
        "loopCondition": "<unknown>",
        "loopStep": "<unknown>",
        "result": "<unknown>"
      }
    },
    "expiration": "<string>"
  },
  "releasers": [
    "<string>"
  ],
  "riskLevel": "RISK_LEVEL_UNSPECIFIED",
  "taskStatusCount": {},
  "labels": [
    "<string>"
  ],
  "approvalStatus": "APPROVAL_STATUS_UNSPECIFIED",
  "approvalStatusError": "<string>"
}