Constant BOARD 

pub const BOARD: &str = "query($owner:String!,$number:Int!,$first:Int!,$after:String,$nestedFirst:Int!,$duplicates:Boolean!){\n      owner:repositoryOwner(login:$owner){\n        ... on ProjectV2Owner{projectV2(number:$number){...Board}}\n      }\n    } fragment Board on ProjectV2 { id title\n      fields(first:$nestedFirst){nodes{\n        ... on ProjectV2SingleSelectField{__typename id name options{id name}}\n        ... on ProjectV2Field{__typename id name}\n      }pageInfo{hasNextPage}}\n      items(first:$first,after:$after){nodes{id fieldValues(first:$nestedFirst){nodes{\n          ... on ProjectV2ItemFieldSingleSelectValue{name field{\n            ... on ProjectV2SingleSelectField{id name options{id name}}\n          }}\n          ... on ProjectV2ItemFieldTextValue{text field{... on ProjectV2Field{id name}}}\n        }pageInfo{hasNextPage}} content{\n        ... on Issue{__typename id title body url createdAt updatedAt state stateReason(enableDuplicate:$duplicates) repository{nameWithOwner} parent{id} subIssuesSummary{total} labels(first:$nestedFirst){nodes{id name color}pageInfo{hasNextPage}}}\n        ... on PullRequest{__typename id}\n        ... on DraftIssue{__typename id title body createdAt updatedAt}\n      }} pageInfo{hasNextPage endCursor}}\n    }";

Reads the board’s fields and one page of its items.