import java.util.AbstractMap.SimpleImmutableEntry;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * A notification of the removal of a single entry. The key and/or value may be null if they were
 * already garbage collected.
 *
 * <p>Like other {@code Entry} instances associated with {@code CacheBuilder}, this class holds

    assertThat(Stream.of(1).collect(onlyElement())).isEqualTo(1);
  }

  public void testOnlyElementNull() {
    assertThat(Stream.<@Nullable Object>of((Object) null).collect(onlyElement())).isNull();
  }

  public void testOnlyElementMultiple() {
    IllegalArgumentException expected =
        assertThrows(IllegalArgumentException.class, () -> Stream.of(1, 2).collect(onlyElement()));

A single HTTP call may require follow-up requests to be made to handle authentication challenges, redirects, and HTTP-layer timeouts. In such cases multiple connections, requests, and responses may be attempted. Follow-ups are another reason a single call may trigger multiple events of the same type.

	ldapConfigs, err := s.GetAvailableTargets(config.IdentityLDAPSubSys)
	if err != nil {
		return nil, err
	}

	// For now, ldapConfigs will only have a single entry for the default
	// configuration.

	var res []madmin.IDPListItem
	for _, cfg := range ldapConfigs {
		res = append(res, madmin.IDPListItem{
			Type:    "ldap",
			Name:    cfg,

# code.
#
# https://github.com/kubernetes/test-infra/blob/master/prow/plugins/size/size.go
#
# This file is a series of lines, each of the form:
#     <type> <name>
#
# Type can be:
#    path - an exact path to a single file
#    file-name - an exact leaf filename, regardless of path
#    path-prefix - a prefix match on the file path
#    file-prefix - a prefix match of the leaf filename (no path)

// Used to detect if lifecycle.Rule contained a DelMarkerExpiration element.
func (de DelMarkerExpiration) Empty() bool {
	return de.Days == 0
}

// UnmarshalXML decodes a single XML element into a DelMarkerExpiration value
func (de *DelMarkerExpiration) UnmarshalXML(dec *xml.Decoder, start xml.StartElement) error {
	type delMarkerExpiration DelMarkerExpiration
	var dexp delMarkerExpiration

# Note: in awk, "print $N" prints the Nth "field", where fields are strings separated
# by whitespace. The flag "-F<x>" changes the behavior such that fields are now strings
# separated by the character <x>. Therefore, -F\' (escaped single quote) means that field
# $2 in <Tensor'flow'> is <flow>. This is useful for reading string literals like below.
export TF_VER_SUFFIX=$(awk -F\" '/#define TF_VERSION_SUFFIX/ {print $2}' tensorflow/core/public/version.h)

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          parameter.groups[3]!!.value
        }
        token.startsWith("'") && token.endsWith("'") && token.length > 2 -> {
          // If the token is 'single-quoted' it's invalid! But we're lenient and strip the quotes.
          token.substring(1, token.length - 1)
        }
        else -> token
      }

    parameterNamesAndValues += name