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import org.jetbrains.annotations.*;
class Test {
@Nullable
String foo1() {
return null;
}
@NotNull
String foo2() {
return "";
}
String foo3(String s) {
return s;
}
@NotNull
String foo4(@NotNull String s) {
return s.substring(0);
}
@NotNull
Integer foo5(Integer i) {
return i++;
}
@NotNull
Integer foo6(Integer i) {
if (i == 0) return 1;
return i * foo6(i--);
}
@Nullable
Integer foo7(boolean flag) {
return flag ? null : 1;
}
@Nullable
Integer foo8(boolean flag) {
if (flag) {
return null;
}
else {
return 1;
}
}
@Nullable
String bar9() {
return foo3("");
}
@Nullable
String foo9() {
return bar9();
}
@Nullable
String bar10() {
return foo3("");
}
@NotNull
String bar101() {
return foo3("");
}
@Nullable
String foo10(boolean flag) {
return flag ? bar10() : bar101();
}
@NotNull
String foo11() {
class Foo{
@Nullable
String mess() {
return null;
}
}
return "";
}
}
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