local file system.

#### Check diffs of manifests

The following command takes two manifests and output the differences in a readable way. It can be used to compare between the manifests generated by operator API and helm directly:

```bash
istioctl manifest diff ./out/helm-template/manifest.yaml ./out/mesh-manifest/manifest.yaml
```

### New API customization

  // The suppression also covers the cast to E[], discussed below.
  // In the backport, we don't have those cases and thus don't need this suppression.
  // We keep it to minimize diffs.
  @SuppressWarnings("unchecked")
  public static <E> ImmutableSet<E> copyOf(Collection<? extends E> elements) {
    /*
     * TODO(lowasser): consider checking for ImmutableAsList here

     * ImmutableSortedSet#orderedBy}.
     */
    /*
     * TODO(cpovirk): use Object[] instead of E[] in the mainline? (The backport is different and
     * doesn't need this suppression, but we keep it to minimize diffs.) Generally be more clear
     * about when we have an Object[] vs. a Comparable[] or other array type in internalArray? If we
     * used Object[], we might be able to optimize toArray() to use clone() sometimes. (See

  // The suppression also covers the cast to E[], discussed below.
  // In the backport, we don't have those cases and thus don't need this suppression.
  // We keep it to minimize diffs.
  @SuppressWarnings("unchecked")
  public static <E> ImmutableSet<E> copyOf(Collection<? extends E> elements) {
    /*
     * TODO(lowasser): consider checking for ImmutableAsList here

     * ImmutableSortedSet#orderedBy}.
     */
    /*
     * TODO(cpovirk): use Object[] instead of E[] in the mainline? (The backport is different and
     * doesn't need this suppression, but we keep it to minimize diffs.) Generally be more clear
     * about when we have an Object[] vs. a Comparable[] or other array type in internalArray? If we
     * used Object[], we might be able to optimize toArray() to use clone() sometimes. (See

    users:
    - name: 54643f96-eca0-11e9-bb97-42010a80000a
      user:
        token: token
---
`, clusterNameAnnotationKey, secretName, key)

				if diff := cmp.Diff(got, wantOutput); diff != "" {
					tt.Errorf("got\n%v\nwant\n%vdiff %v", got, c.want, diff)
				}
			}
		})
	}
}

func TestGetServiceAccountSecretToken(t *testing.T) {
	secret := makeSecret("secret", "caData", "token")

- [manifest](../operator/cmd/mesh/manifest.go): the manifest subcommand is used to generate, install, diff or migrate Istio manifests, it has the following subcommands:
    - [install](../operator/cmd/mesh/install.go): the install subcommand is used to generate an Istio install manifest and apply it to a cluster.
    - [diff](../operator/cmd/mesh/manifest-diff.go): the diff subcommand is used to compare manifest from two files or directories.

    Multiset<String> ms2 = HashMultiset.create(Arrays.asList("a", "b", "b", "b"));
    Multiset<String> diff = Multisets.difference(ms1, ms2);
    assertThat(diff).contains("a");
    assertEquals(0, diff.count("b"));
    assertEquals(1, diff.count("a"));
    assertFalse(diff.contains("b"));
    assertTrue(diff.contains("a"));
  }

  public void testDifferenceEmptyNonempty() {

    Multiset<String> ms2 = HashMultiset.create(Arrays.asList("a", "b", "b", "b"));
    Multiset<String> diff = Multisets.difference(ms1, ms2);
    assertThat(diff).contains("a");
    assertEquals(0, diff.count("b"));
    assertEquals(1, diff.count("a"));
    assertFalse(diff.contains("b"));
    assertTrue(diff.contains("a"));
  }

  public void testDifferenceEmptyNonempty() {

		}
		nano := t.UnixNano()
		if group > 0 {
			for k := range timeOccurrenceMap {
				if k == nano {
					// We add to ourself later
					continue
				}
				diff := k - nano
				if diff < 0 {
					diff = -diff
				}
				// We are within the limit
				if diff < groupNano {
					timeOccurrenceMap[k]++
				}
			}
		}
		// Add ourself...
		timeOccurrenceMap[nano]++
	}