def Lean.Meta.collectAboveThreshold {α : Type u_1} [BEq α] [Hashable α] (counters : PHashMap α Nat) (threshold : Nat) (p : α → Bool) (lt : α → α → Bool) : Array (α × Nat)

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def Lean.Meta.subCounters {α : Type u_1} [BEq α] [Hashable α] (newCounters oldCounters : PHashMap α Nat) : PHashMap α Nat

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structure Lean.Meta.DiagSummary : Type

• data : Array MessageData
• max : Nat

instance Lean.Meta.instInhabitedDiagSummary : Inhabited DiagSummary

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• Lean.Meta.instInhabitedDiagSummary = { default := { data := default, max := default } }

def Lean.Meta.DiagSummary.isEmpty (s : DiagSummary) : Bool

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• s.isEmpty = s.data.isEmpty

def Lean.Meta.mkDiagSummary (cls : Name) (counters : PHashMap Name Nat) (p : Name → Bool := fun (x : Name) => true) : MetaM DiagSummary

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def Lean.Meta.mkDiagSummaryForUnfolded (counters : PHashMap Name Nat) (instances : Bool := false) : MetaM DiagSummary

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def Lean.Meta.mkDiagSummaryForUnfoldedReducible (counters : PHashMap Name Nat) : MetaM DiagSummary

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def Lean.Meta.mkDiagSummaryForUsedInstances : MetaM DiagSummary

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• Lean.Meta.mkDiagSummaryForUsedInstances = do let __do_lift ← get Lean.Meta.mkDiagSummary `type_class __do_lift.diag.instanceCounter

def Lean.Meta.mkDiagSynthPendingFailure (failures : PHashMap Expr MessageData) : MetaM DiagSummary

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def Lean.Meta.appendSection (m : MessageData) (cls : Name) (header : String) (s : DiagSummary) (resultSummary : Bool := true) : MessageData

We use below that this returns m unchanged if s.isEmpty

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def Lean.Meta.reportDiag : MetaM Unit

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