if (!Character.isDigit(hostname.charAt(i))) {
                return false;
            }
        }
        return true;
    }

    /**
     * Lookup <code>hostname</code> and return it's <code>UniAddress</code>. If the
     * <code>possibleNTDomainOrWorkgroup</code> parameter is <code>true</code> an
     * addtional name query will be performed to locate a master browser.

      return o;
    }

    @Override
    public String toString() {
      return "Functions.identity()";
    }
  }

  /**
   * Returns a function which performs a map lookup. The returned function throws an {@link
   * IllegalArgumentException} if given a key that does not exist in the map. See also {@link
   * #forMap(Map, Object)}, which returns a default value in this case.
   *

                    dots++;
                    i++;
                }
            }
        }

        return false;
    }

    /**
     * Perform DNS SRV lookup on successively shorter suffixes of name
     * and return successful suffix or throw an UnknownHostException.
     * import javax.naming.*;
     * import javax.naming.directory.*;

        InternalSession iSession = defaultSessionFactory.newSession(mSession);
        mSession.setSession(iSession);

        SessionScope sessionScope = getContainer().lookup(SessionScope.class);
        sessionScope.enter();
        sessionScope.seed(MavenSession.class, mSession);
        sessionScope.seed(Session.class, iSession);

// Map from op name to a `GradientFunctionFactory`.
class GradientRegistry {
 public:
  absl::Status Register(const string& op,
                        GradientFunctionFactory gradient_function_factory);
  absl::Status Lookup(
      const ForwardOperation& op,
      std::unique_ptr<GradientFunction>* gradient_function) const;

 private:
  absl::flat_hash_map<string, GradientFunctionFactory> registry_;
};

type AuthZPlugin struct {
	args   Args
	client *http.Client
}

// Enabled returns if AuthZPlugin is enabled.
func Enabled(kvs config.KVS) bool {
	return kvs.Get(URL) != ""
}

// LookupConfig lookup AuthZPlugin from config, override with any ENVs.
func LookupConfig(s config.Config, httpSettings xhttp.ConnSettings, closeRespFn func(io.ReadCloser)) (Args, error) {
	args := Args{}

    this.allowsSelfLoops = builder.allowsSelfLoops;
    this.nodeOrder = builder.nodeOrder.cast();
    this.edgeOrder = builder.edgeOrder.cast();
    // Prefer the heavier "MapRetrievalCache" for nodes if lookup is expensive. This optimizes
    // methods that access the same node(s) repeatedly, such as Graphs.removeEdgesConnecting().
    this.nodeConnections =
        (nodeConnections instanceof TreeMap)

        // Default constructor
    }

    private static final Logger logger = LogManager.getLogger(QueryProcessor.class);

    /**
     * Map of query commands indexed by query class simple names.
     * Used to lookup appropriate command handlers for different query types.
     */
    protected Map<String, QueryCommand> queryCommandMap = new HashMap<>();

    /**
     * List of filters that will be applied during query processing.

	UserDefined map[string]string

	// ChecksumAlgorithm if set
	ChecksumAlgorithm string

	// ChecksumType if set
	ChecksumType string
}

// Lookup - returns if uploadID is valid
func (lm ListMultipartsInfo) Lookup(uploadID string) bool {
	for _, upload := range lm.Uploads {
		if upload.UploadID == uploadID {
			return true
		}
	}
	return false
}

 * that is more mercury related and not Maven related i.e. no POMs - workspace resolver - we need
 * tools to pre-populate this repository
 *
 * h3. create an isolated classloader
 *
 * h3. lookup the plugin with a configuration
 *
 * h3. execute the plugin
 *
 * h3. plugins may have to deal with particular actions when a plugin is - installed - loaded -
 * unloaded - update - uninstalled
 *