Add ParentIssueURL field to Issue struct (#3841)

Author: SP3269

github/github-accessors.go

@@ -54,6 +54,7 @@ type Issue struct {
 	EventsURL         *string           `json:"events_url,omitempty"`
 	LabelsURL         *string           `json:"labels_url,omitempty"`
 	RepositoryURL     *string           `json:"repository_url,omitempty"`
+	ParentIssueURL    *string           `json:"parent_issue_url,omitempty"`
 	Milestone         *Milestone        `json:"milestone,omitempty"`
 	PullRequestLinks  *PullRequestLinks `json:"pull_request,omitempty"`
 	Repository        *Repository       `json:"repository,omitempty"`

github/github-accessors_test.go

@@ -586,6 +586,7 @@ func TestIssue_Marshal(t *testing.T) {
 		EventsURL:         Ptr("eurl"),
 		LabelsURL:         Ptr("lurl"),
 		RepositoryURL:     Ptr("rurl"),
+		ParentIssueURL:    Ptr("piurl"),
 		Milestone:         &Milestone{ID: Ptr(int64(1))},
 		PullRequestLinks:  &PullRequestLinks{URL: Ptr("url")},
 		Repository:        &Repository{ID: Ptr(int64(1))},
@@ -629,6 +630,7 @@ func TestIssue_Marshal(t *testing.T) {
 		"events_url": "eurl",
 		"labels_url": "lurl",
 		"repository_url": "rurl",
+		"parent_issue_url": "piurl",
 		"milestone": {
 			"id": 1
 		},