Constant SET_PARENTS 

pub const SET_PARENTS: &str = "mutation($parent0:AddSubIssueInput!,$sendParent0:Boolean!,$parent1:AddSubIssueInput!,$sendParent1:Boolean!,$parent2:AddSubIssueInput!,$sendParent2:Boolean!,$parent3:AddSubIssueInput!,$sendParent3:Boolean!,$parent4:AddSubIssueInput!,$sendParent4:Boolean!,$parent5:AddSubIssueInput!,$sendParent5:Boolean!,$parent6:AddSubIssueInput!,$sendParent6:Boolean!,$parent7:AddSubIssueInput!,$sendParent7:Boolean!,$parent8:AddSubIssueInput!,$sendParent8:Boolean!,$parent9:AddSubIssueInput!,$sendParent9:Boolean!,$parent10:AddSubIssueInput!,$sendParent10:Boolean!,$parent11:AddSubIssueInput!,$sendParent11:Boolean!,$parent12:AddSubIssueInput!,$sendParent12:Boolean!,$parent13:AddSubIssueInput!,$sendParent13:Boolean!,$parent14:AddSubIssueInput!,$sendParent14:Boolean!,$parent15:AddSubIssueInput!,$sendParent15:Boolean!,$parent16:AddSubIssueInput!,$sendParent16:Boolean!,$parent17:AddSubIssueInput!,$sendParent17:Boolean!,$parent18:AddSubIssueInput!,$sendParent18:Boolean!,$parent19:AddSubIssueInput!,$sendParent19:Boolean!,$parent20:AddSubIssueInput!,$sendParent20:Boolean!,$parent21:AddSubIssueInput!,$sendParent21:Boolean!,$parent22:AddSubIssueInput!,$sendParent22:Boolean!,$parent23:AddSubIssueInput!,$sendParent23:Boolean!,$parent24:AddSubIssueInput!,$sendParent24:Boolean!,$parent25:AddSubIssueInput!,$sendParent25:Boolean!,$parent26:AddSubIssueInput!,$sendParent26:Boolean!,$parent27:AddSubIssueInput!,$sendParent27:Boolean!,$parent28:AddSubIssueInput!,$sendParent28:Boolean!,$parent29:AddSubIssueInput!,$sendParent29:Boolean!,$unparent0:RemoveSubIssueInput!,$sendUnparent0:Boolean!,$unparent1:RemoveSubIssueInput!,$sendUnparent1:Boolean!,$unparent2:RemoveSubIssueInput!,$sendUnparent2:Boolean!,$unparent3:RemoveSubIssueInput!,$sendUnparent3:Boolean!,$unparent4:RemoveSubIssueInput!,$sendUnparent4:Boolean!,$unparent5:RemoveSubIssueInput!,$sendUnparent5:Boolean!,$unparent6:RemoveSubIssueInput!,$sendUnparent6:Boolean!,$unparent7:RemoveSubIssueInput!,$sendUnparent7:Boolean!,$unparent8:RemoveSubIssueInput!,$sendUnparent8:Boolean!,$unparent9:RemoveSubIssueInput!,$sendUnparent9:Boolean!,$unparent10:RemoveSubIssueInput!,$sendUnparent10:Boolean!,$unparent11:RemoveSubIssueInput!,$sendUnparent11:Boolean!,$unparent12:RemoveSubIssueInput!,$sendUnparent12:Boolean!,$unparent13:RemoveSubIssueInput!,$sendUnparent13:Boolean!,$unparent14:RemoveSubIssueInput!,$sendUnparent14:Boolean!,$unparent15:RemoveSubIssueInput!,$sendUnparent15:Boolean!,$unparent16:RemoveSubIssueInput!,$sendUnparent16:Boolean!,$unparent17:RemoveSubIssueInput!,$sendUnparent17:Boolean!,$unparent18:RemoveSubIssueInput!,$sendUnparent18:Boolean!,$unparent19:RemoveSubIssueInput!,$sendUnparent19:Boolean!,$unparent20:RemoveSubIssueInput!,$sendUnparent20:Boolean!,$unparent21:RemoveSubIssueInput!,$sendUnparent21:Boolean!,$unparent22:RemoveSubIssueInput!,$sendUnparent22:Boolean!,$unparent23:RemoveSubIssueInput!,$sendUnparent23:Boolean!,$unparent24:RemoveSubIssueInput!,$sendUnparent24:Boolean!,$unparent25:RemoveSubIssueInput!,$sendUnparent25:Boolean!,$unparent26:RemoveSubIssueInput!,$sendUnparent26:Boolean!,$unparent27:RemoveSubIssueInput!,$sendUnparent27:Boolean!,$unparent28:RemoveSubIssueInput!,$sendUnparent28:Boolean!,$unparent29:RemoveSubIssueInput!,$sendUnparent29:Boolean!,){ parent0:addSubIssue(input:$parent0) @include(if:$sendParent0){issue{id} subIssue{id}} parent1:addSubIssue(input:$parent1) @include(if:$sendParent1){issue{id} subIssue{id}} parent2:addSubIssue(input:$parent2) @include(if:$sendParent2){issue{id} subIssue{id}} parent3:addSubIssue(input:$parent3) @include(if:$sendParent3){issue{id} subIssue{id}} parent4:addSubIssue(input:$parent4) @include(if:$sendParent4){issue{id} subIssue{id}} parent5:addSubIssue(input:$parent5) @include(if:$sendParent5){issue{id} subIssue{id}} parent6:addSubIssue(input:$parent6) @include(if:$sendParent6){issue{id} subIssue{id}} parent7:addSubIssue(input:$parent7) @include(if:$sendParent7){issue{id} subIssue{id}} parent8:addSubIssue(input:$parent8) @include(if:$sendParent8){issue{id} subIssue{id}} parent9:addSubIssue(input:$parent9) @include(if:$sendParent9){issue{id} subIssue{id}} parent10:addSubIssue(input:$parent10) @include(if:$sendParent10){issue{id} subIssue{id}} parent11:addSubIssue(input:$parent11) @include(if:$sendParent11){issue{id} subIssue{id}} parent12:addSubIssue(input:$parent12) @include(if:$sendParent12){issue{id} subIssue{id}} parent13:addSubIssue(input:$parent13) @include(if:$sendParent13){issue{id} subIssue{id}} parent14:addSubIssue(input:$parent14) @include(if:$sendParent14){issue{id} subIssue{id}} parent15:addSubIssue(input:$parent15) @include(if:$sendParent15){issue{id} subIssue{id}} parent16:addSubIssue(input:$parent16) @include(if:$sendParent16){issue{id} subIssue{id}} parent17:addSubIssue(input:$parent17) @include(if:$sendParent17){issue{id} subIssue{id}} parent18:addSubIssue(input:$parent18) @include(if:$sendParent18){issue{id} subIssue{id}} parent19:addSubIssue(input:$parent19) @include(if:$sendParent19){issue{id} subIssue{id}} parent20:addSubIssue(input:$parent20) @include(if:$sendParent20){issue{id} subIssue{id}} parent21:addSubIssue(input:$parent21) @include(if:$sendParent21){issue{id} subIssue{id}} parent22:addSubIssue(input:$parent22) @include(if:$sendParent22){issue{id} subIssue{id}} parent23:addSubIssue(input:$parent23) @include(if:$sendParent23){issue{id} subIssue{id}} parent24:addSubIssue(input:$parent24) @include(if:$sendParent24){issue{id} subIssue{id}} parent25:addSubIssue(input:$parent25) @include(if:$sendParent25){issue{id} subIssue{id}} parent26:addSubIssue(input:$parent26) @include(if:$sendParent26){issue{id} subIssue{id}} parent27:addSubIssue(input:$parent27) @include(if:$sendParent27){issue{id} subIssue{id}} parent28:addSubIssue(input:$parent28) @include(if:$sendParent28){issue{id} subIssue{id}} parent29:addSubIssue(input:$parent29) @include(if:$sendParent29){issue{id} subIssue{id}} unparent0:removeSubIssue(input:$unparent0) @include(if:$sendUnparent0){issue{id} subIssue{id}} unparent1:removeSubIssue(input:$unparent1) @include(if:$sendUnparent1){issue{id} subIssue{id}} unparent2:removeSubIssue(input:$unparent2) @include(if:$sendUnparent2){issue{id} subIssue{id}} unparent3:removeSubIssue(input:$unparent3) @include(if:$sendUnparent3){issue{id} subIssue{id}} unparent4:removeSubIssue(input:$unparent4) @include(if:$sendUnparent4){issue{id} subIssue{id}} unparent5:removeSubIssue(input:$unparent5) @include(if:$sendUnparent5){issue{id} subIssue{id}} unparent6:removeSubIssue(input:$unparent6) @include(if:$sendUnparent6){issue{id} subIssue{id}} unparent7:removeSubIssue(input:$unparent7) @include(if:$sendUnparent7){issue{id} subIssue{id}} unparent8:removeSubIssue(input:$unparent8) @include(if:$sendUnparent8){issue{id} subIssue{id}} unparent9:removeSubIssue(input:$unparent9) @include(if:$sendUnparent9){issue{id} subIssue{id}} unparent10:removeSubIssue(input:$unparent10) @include(if:$sendUnparent10){issue{id} subIssue{id}} unparent11:removeSubIssue(input:$unparent11) @include(if:$sendUnparent11){issue{id} subIssue{id}} unparent12:removeSubIssue(input:$unparent12) @include(if:$sendUnparent12){issue{id} subIssue{id}} unparent13:removeSubIssue(input:$unparent13) @include(if:$sendUnparent13){issue{id} subIssue{id}} unparent14:removeSubIssue(input:$unparent14) @include(if:$sendUnparent14){issue{id} subIssue{id}} unparent15:removeSubIssue(input:$unparent15) @include(if:$sendUnparent15){issue{id} subIssue{id}} unparent16:removeSubIssue(input:$unparent16) @include(if:$sendUnparent16){issue{id} subIssue{id}} unparent17:removeSubIssue(input:$unparent17) @include(if:$sendUnparent17){issue{id} subIssue{id}} unparent18:removeSubIssue(input:$unparent18) @include(if:$sendUnparent18){issue{id} subIssue{id}} unparent19:removeSubIssue(input:$unparent19) @include(if:$sendUnparent19){issue{id} subIssue{id}} unparent20:removeSubIssue(input:$unparent20) @include(if:$sendUnparent20){issue{id} subIssue{id}} unparent21:removeSubIssue(input:$unparent21) @include(if:$sendUnparent21){issue{id} subIssue{id}} unparent22:removeSubIssue(input:$unparent22) @include(if:$sendUnparent22){issue{id} subIssue{id}} unparent23:removeSubIssue(input:$unparent23) @include(if:$sendUnparent23){issue{id} subIssue{id}} unparent24:removeSubIssue(input:$unparent24) @include(if:$sendUnparent24){issue{id} subIssue{id}} unparent25:removeSubIssue(input:$unparent25) @include(if:$sendUnparent25){issue{id} subIssue{id}} unparent26:removeSubIssue(input:$unparent26) @include(if:$sendUnparent26){issue{id} subIssue{id}} unparent27:removeSubIssue(input:$unparent27) @include(if:$sendUnparent27){issue{id} subIssue{id}} unparent28:removeSubIssue(input:$unparent28) @include(if:$sendUnparent28){issue{id} subIssue{id}} unparent29:removeSubIssue(input:$unparent29) @include(if:$sendUnparent29){issue{id} subIssue{id}}}";

Up to RELATION_BATCH parent writes in one request: parent<n> an addSubIssue (a re-parent carrying replaceParent: true) and unparent<n> a removeSubIssue, each sent only while its own send…<n> holds. GitHub runs each alias on its own and answers one it refused — a cycle, a depth or children limit — at its own path, beside the others.