void (@Nullable PsiExpression reference, @Nullable String exception) { if (reference == null) { return; } DfaControlTransferValue transferValue = exception != null ? createTransfer(exception) : null; addInstruction(new DupInstruction()); addInstruction(new UnwrapDerivedVariableInstruction(SpecialField.CONSUMED_STREAM)); addInstruction(new EnsureInstruction(new ConsumedStreamProblem(reference), RelationType.NE, DfStreamStateType.CONSUMED, transferValue)); addInstruction(new PopInstruction()); }