List of pullRequest mergeCheck objects.
Example: {"items": [{ "type" : "CONFLICT(ENUM values)",
"status" : "FAILED(ENUM values)"},
{"type": "APPROVAL_RULE(ENUM VALUE)",
"ruleName": "rule 1",
"status" : "NEEDS_APPROVAL(ENUM values)",
"totalApprovalCount":"5",
"currentApprovalCount":"1",
"reviewers":[
The time Stamp of the validation check.
list of merge checks.