checker/tests/nullness/Issue4614.java

import java.util.HashMap;
import java.util.Map;
import java.util.stream.Collectors;

public final class Issue4614 {

  public static Map<String, String> getAllVersionInformation() {
    return new HashMap<>();
  }

  public void method1() {
    final String versionInfo =
        Issue4614.getAllVersionInformation().entrySet().stream() //
            .map(e -> String.format("%s:%s", e.getKey(), e.getValue())) //
            .collect(Collectors.joining("\n"));
  }

  Map<String, String> allVersionInformation = new HashMap<>();

  public void method2() {
    final String versionInfo =
        allVersionInformation.entrySet().stream() //
            .map(e -> String.format("%s:%s", e.getKey(), e.getValue())) //
            .collect(Collectors.joining("\n"));
  }
}