private DfaValue popQualifier(
MethodCallInstruction instruction, DataFlowRunner runner, DfaMemoryState memState) {
@NotNull final DfaValue qualifier = memState.pop();
boolean unboxing = instruction.getMethodType() == MethodCallInstruction.MethodType.UNBOXING;
NullabilityProblem problem =
unboxing ? NullabilityProblem.unboxingNullable : NullabilityProblem.callNPE;
PsiExpression anchor = unboxing ? instruction.getContext() : instruction.getCallExpression();
if (!checkNotNullable(memState, qualifier, problem, anchor)) {
forceNotNull(runner, memState, qualifier);
}
return qualifier;
}
