long momentAvailable = reserveEarliestAvailable(permits, nowMicros);
    return max(momentAvailable - nowMicros, 0);
  }

  /**
   * Returns the earliest time that permits are available (with one caveat).
   *
   * @return the time that permits are available, or, if permits are available immediately, an
   *     arbitrary past or present time
   */

// converted to int they correspond to the rune size that was read.
type readOp int8

// Don't use iota for these, as the values need to correspond with the
// names and comments, which is easier to see when being explicit.
const (
	opRead      readOp = -1 // Any other read operation.
	opInvalid   readOp = 0  // Non-read operation.
	opReadRune1 readOp = 1  // Read rune of size 1.

	log.Info("configuring host-level iptables rules (healthchecks, etc)")

	iptablesBuilder := builder.NewIptablesRuleBuilder(ipbuildConfig(cfg.cfg))

	// For easier cleanup, insert a jump into an owned chain
	// -A POSTROUTING -p tcp -j ISTIO_POSTRT
	iptablesBuilder.AppendRule(
		iptableslog.UndefinedCommand, iptablesconstants.POSTROUTING, iptablesconstants.NAT,

   * per call to submit() or submitAsync(), and each instance supports only one call to execute().
   *
   * <p>This class would certainly be simpler and easier to reason about if it were built with
   * ThreadLocal; however, ThreadLocal is not well optimized for the case where the ThreadLocal is
   * non-static, and is initialized/removed frequently - this causes churn in the Thread specific

      comment syntax for the file format. We also recommend that a
      file or class name and description of purpose be included on the
      same "printed page" as the copyright notice for easier
      identification within third-party archives.

   Copyright {yyyy} {name of copyright owner}

   Licensed under the Apache License, Version 2.0 (the "License");

Of course, there are some cases where there's no problem in running the previous steps multiple times, in that case, it's a lot easier to handle.

/// tip

Also, keep in mind that depending on your setup, in some cases you **might not even need any previous steps** before starting your application.

   * invokeAny} which are pending serial execution, even the subset of the tasks that have not yet
   * started execution. It is unclear from the {@code ExecutorService} specification if these should
   * be included, and it's much easier to implement the interpretation that they not be. Finally, a
   * call to {@code shutdown} or {@code shutdownNow} may result in concurrent calls to {@code

of the column. Applies to IE10+ and Firefox. Chrome and Safari\n  // do not appear to require this.\n  max-width: percentage(divide($size, $columns));\n}\n\n@mixin make-col-auto() {\n  flex: 0 0 auto;\n  width: auto;\n  max-width: 100%; // Reset earlier grid tiers\n}\n\n@mixin make-col-offset($size, $columns: $grid-columns) {\n  $num: divide($size, $columns);\n  margin-left: if($num == 0, 0, percentage($num));\n}\n\n// Row columns\n//\n// Specify on a parent element(e.g., .row) to force immediate...

        }
      }
    }
    for (Invokable<?, ?> factory : factories) {
      factory.setAccessible(true);
    }
    // Sorts methods/constructors with the least number of parameters first since it's likely easier
    // to fill dummy parameter values for them. Ties are broken by name then by the string form of
    // the parameter list.
    return BY_NUMBER_OF_PARAMETERS
        .compound(BY_METHOD_NAME)

the width of the column. Applies to IE10+ and Firefox. Chrome and Safari\n  // do not appear to require this.\n  max-width: percentage($size / $columns);\n}\n\n@mixin make-col-auto() {\n  flex: 0 0 auto;\n  width: auto;\n  max-width: 100%; // Reset earlier grid tiers\n}\n\n@mixin make-col-offset($size, $columns: $grid-columns) {\n  $num: $size / $columns;\n  margin-left: if($num == 0, 0, percentage($num));\n}\n\n// Row columns\n//\n// Specify on a parent element(e.g., .row) to force immediate children...