ILLink.RoslynAnalyzer.DataFlow.LocalDataFlowVisitor<TValue, TContext, TValueLattice, TContextLattice, TConditionValue>.VisitConversion(Microsoft.CodeAnalysis.Operations.IConversionOperation, ILLink.RoslynAnalyzer.DataFlow.LocalDataFlowState<TValue, TContext, TValueLattice, TContextLattice>)