Then, you try with the old programmer's friend, editor autocompletion.

You type the first parameter of the function, `first_name`, then a dot (`.`) and then hit `Ctrl+Space` to trigger the completion.

But, sadly, you get nothing useful:

<img src="/img/python-types/image01.png">

### Add types

Let's modify a single line from the previous version.

We will change exactly this fragment, the parameters of the function, from:

// They can limit the scaling velocity by specifying scaling policies.
// They can prevent flapping by specifying the stabilization window, so that the
// number of replicas is not set instantly, instead, the safest value from the stabilization
// window is chosen.
message HPAScalingRules {
  // stabilizationWindowSeconds is the number of seconds for which past recommendations should be
  // considered while scaling up or scaling down.

very little use without my shoulders.  Oh, how I wish
I could shut up like a telescope!  I think I could, if I only
know how to begin.'  For, you see, so many out-of-the-way things
had happened lately, that Alice had begun to think that very few
things indeed were really impossible.

  There seemed to be no use in waiting by the little door, so she
went back to the table, half hoping she might find another key on

  // objects whose podSelector matches the pod.
  // If this field is empty then this NetworkPolicy does not allow any traffic
  // (and serves solely to ensure that the pods it selects are isolated by default).
  // +optional
  repeated NetworkPolicyIngressRule ingress = 2;

  // List of egress rules to be applied to the selected pods. Outgoing traffic is

      @SuppressWarnings("rawtypes") // JDT-based J2KT Java frontend does not permit the direct cast
      Map rawMap = map;
      @SuppressWarnings("unchecked") // covariant casts safe (unmodifiable)
      ImmutableClassToInstanceMap<B> cast = (ImmutableClassToInstanceMap<B>) rawMap;
      return cast;
    }
    return new Builder<B>().putAll(map).build();
  }

OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR CONDITIONS OF
TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Each Recipient is solely responsible for determining the appropriateness of
using and distributing the Program and assumes all risks associated with its
exercise of rights under this Agreement, including but not limited to the

    // We assume that all defaults are generics-safe, even if they aren't,
    // we take the risk.
    @SuppressWarnings("unchecked")
    T defaultValue = (T) defaults.getInstance(type.getRawType());
    if (defaultValue != null) {
      return defaultValue;
    }
    @SuppressWarnings("unchecked") // All arbitrary instances are generics-safe
    T arbitrary = (T) ArbitraryInstances.get(type.getRawType());

     * 
     * @return whether to use strict resource lifecycle
     */
    boolean isStrictResourceLifecycle ();


    /**
     * This is solely intended for debugging
     * 
     * @return whether to track the locations from which resources were created
     */
    boolean isTraceResourceUsage ();


    /**
     * @param command

    /*
     * Note that technically the returned ordering should be capable of
     * handling not just {@code Iterable<S>} instances, but also any {@code
     * Iterable<? extends S>}. However, the need for this comes up so rarely
     * that it doesn't justify making everyone else deal with the very ugly
     * wildcard.
     */
    return new LexicographicalOrdering<S>(this);
  }

  // Regular instance methods

  @Override

          }

          @Override
          public int size() {
            return AbstractNetwork.this.edges().size();
          }

          // Mostly safe: We check contains(u) before calling successors(u), so we perform unsafe
          // operations only in weird cases like checking for an EndpointPair<ArrayList> in a
          // Network<LinkedList>.