robolectric/src/main/java/org/robolectric/junit/rules/ExpectedLogMessagesRule.java
public void expectErrorsForTag(String tag) {
    checkTag(tag);
    if (UNPREVENTABLE_TAGS.contains(tag)) {
      throw new AssertionError("Tag `" + tag + "` is already suppressed.");
    }
    expectedTags.add(tag);
  }
public void expectErrorsForTag(String tag) {
    checkTag(tag);
    if (UNPREVENTABLE_TAGS.contains(tag)) {
      throw new AssertionError("Tag `" + tag + "` is already suppressed.");
    }
    expectedTags.add(tag);
  }
Blanket suppress test failures due to errors from a tag. If this tag is not printed at
Log.ERROR during test execution, the test case will fail (unless {@link
#ignoreMissingLoggedTags()} is used).

<p>Avoid using this method when possible. Prefer to assert on the presence of a specific
message using {@link #expectLogMessage} in test cases that *intentionally* trigger an error.