Merge "Fix array-related errorprone warnings"

import com.google.common.collect.Lists;

import com.google.common.truth.Correspondence;

import java.util.Arrays;

import java.util.List;

import java.util.Objects;

            Correspondence.from((@Nullable RootInfo actual, @Nullable RootInfo expected) -> {

                    return actual != null && expected != null

                            && Objects.equals(actual.userId, expected.userId)

                            && Objects.equals(actual.derivedMimeTypes, expected.derivedMimeTypes);

                            && Arrays.equals(actual.derivedMimeTypes, expected.derivedMimeTypes);

            }, "has same userId and mimeTypes as in");

    private static RootInfo mNull = buildForMimeTypes((String[]) null);